Number 31 in Arabic

واحد وثلاثون

Pronunciation

WAH-hid wah-tha-la-THOON. Break it down: 'wāḥid' (WAH-hid, with a long 'a' sound and emphasis on first syllable) + 'wa' (wah, meaning 'and') + 'thalāthūn' (tha-la-THOON, with 'th' as in 'think', long 'a' in middle, and 'oon' rhyming with 'moon'). The stress falls on the final syllable 'THOON' of thalāthūn.

About This Number

The number 31 in Arabic is written as "واحد وثلاثون" (wāḥid wa-thalāthūn) and follows the compound number pattern used for numbers 21-99. It literally translates as "one and thirty," with the ones digit (1) placed before the conjunction "wa" (and) followed by the tens digit (30).

Usage Examples

عندي واحد وثلاثون كتاباً (ʿindī wāḥid wa-thalāthūna kitāban) - I have 31 books (the noun 'book' is in the singular accusative form with tanween)
في الشهر واحد وثلاثون يوماً (fī ash-shahri wāḥid wa-thalāthūna yawman) - There are 31 days in the month (commonly used for months like January, March, May, July, August, October, and December)
عمري واحد وثلاثون سنة (ʿumrī wāḥid wa-thalāthūna sanatan) - I am 31 years old (the word 'year' appears in singular accusative)
اشتريت واحداً وثلاثين قلماً (ishtaraytu wāḥidan wa-thalāthīna qalaman) - I bought 31 pens (both parts of the number take accusative case as the object)
حضر واحد وثلاثون طالباً (ḥaḍara wāḥid wa-thalāthūna ṭāliban) - 31 students attended (the noun remains singular despite the plural quantity)
سعر التذكرة واحد وثلاثون ديناراً (siʿru at-tadhkirati wāḥid wa-thalāthūna dīnāran) - The ticket price is 31 dinars (commonly used in pricing and financial contexts)

Grammar Notes

The number 31 consists of two parts that follow different grammatical rules. The first part (واحد - one) agrees with the counted noun in gender: use واحد (wāḥid) for masculine nouns and واحدة (wāḥida) for feminine nouns. The second part (ثلاثون - thirty) is invariable and does not change for gender. The counted noun always appears in the singular indefinite accusative form (منصوب منون) with tanween fatah, such as كتاباً (kitāban - book) or سنةً (sanatan - year), regardless of the actual quantity. In terms of case endings (إعراب), when the entire number 31 is the subject of a sentence, both components take nominative case (مرفوع): واحد وثلاثون. When it functions as the object or follows certain prepositions, both parts take accusative case (منصوب): واحداً وثلاثين. This differs from the counted noun, which always remains in the accusative singular form.

Cultural Significance

In Islamic culture, the number 31 is commonly associated with the longer months of both the Gregorian and Hijri calendars, though the Islamic lunar calendar months typically have either 29 or 30 days. The number frequently appears in daily life when discussing dates, as seven months of the Gregorian year contain 31 days. In Arab countries, this number is routinely used when scheduling events at month's end or when counting inventory, money, or quantities in business and commerce.

Fun Facts

The structure of 31 in Arabic (ones before tens) reflects an ancient Semitic counting pattern that differs from modern English but matches the Hebrew system. Mathematically, 31 is a prime number, and in Arabic numerals (٣١), it palindromically uses two distinct digit forms. Interestingly, when Arabs write checks or legal documents, they often spell out numbers like 31 in full (واحد وثلاثون) to prevent fraudulent alterations, making knowledge of these compound number forms essential for financial literacy.

## Understanding the Number 31 in Arabic The number 31 in Arabic is expressed as **واحد وثلاثون** (wāḥid wa-thalāthūn), which literally means "one and thirty." This compound number exemplifies the unique structure of Arabic numbers from 21 to 99, where the ones digit precedes the tens digit, connected by the conjunction "wa" (و) meaning "and." This pattern may seem unusual to English speakers who say "thirty-one," but it reflects an ancient Semitic linguistic tradition that has remained consistent throughout Arabic's long history. ## Pronunciation Guide for English Speakers Pronouncing 31 in Arabic requires attention to each component. The first part, **واحد** (wāḥid), is pronounced "WAH-hid" with a long 'a' vowel and slight emphasis on the first syllable. The conjunction **و** (wa) is simply "wah," rhyming with "ah." The final component, **ثلاثون** (thalāthūn), is pronounced "tha-la-THOON," where the "th" sound is produced with the tongue between the teeth (as in "think"), the middle syllable contains a long 'a' sound, and the final syllable "oon" rhymes with "moon" and carries the primary stress. When spoken together at natural speed, it flows as: WAH-hid wah-tha-la-THOON. ## Grammar Rules and Number-Noun Agreement Arabic number grammar for 31 involves several important rules that learners must master. First, the **واحد** (one) component must agree in gender with the counted noun. When counting masculine nouns, use **واحد** (wāḥid), as in **واحد وثلاثون رجلاً** (31 men). When counting feminine nouns, use **واحدة** (wāḥida), as in **واحدة وثلاثون امرأةً** (31 women). However, the **ثلاثون** (thirty) component remains unchanged regardless of the noun's gender. The counted noun itself always appears in the **singular indefinite accusative form** (منصوب منون), marked by tanween fatah (-an ending). This applies regardless of the actual quantity being counted. For example: **واحد وثلاثون كتاباً** (31 books), where **كتاباً** (kitāban) is singular despite referring to multiple items. This grammatical peculiarity is one of the most challenging aspects of Arabic numerals for non-native speakers. Regarding case endings (إعراب), the number 31 itself changes based on its grammatical function in the sentence. When serving as the subject (فاعل) or predicate (خبر), both components take nominative case: **واحد وثلاثون**. When functioning as the object (مفعول به) or following certain prepositions, both parts shift to accusative: **واحداً وثلاثين**. Notice that **ثلاثون** becomes **ثلاثين** in the accusative and genitive cases, while **واحد** takes the accusative marker **-an** (واحداً). ## Practical Usage in Daily Life The number 31 appears frequently in Arabic-speaking contexts, particularly when discussing calendar dates. Seven months of the Gregorian year contain 31 days (January, March, May, July, August, October, and December), making this number essential for scheduling and planning. In formal Arabic, you might say: **في يناير واحد وثلاثون يوماً** (In January there are 31 days). In commercial settings, 31 commonly appears in pricing, inventory counts, and financial transactions. For instance: **السعر واحد وثلاثون ديناراً** (The price is 31 dinars). When writing checks or legal documents in Arab countries, numbers are spelled out completely to prevent fraud, making knowledge of compound numbers like 31 practically indispensable. Age expressions also frequently use this number: **عمري واحد وثلاثون سنة** (I am 31 years old), where **سنة** (year) remains in the singular accusative form **سنةً**. This construction appears in identification documents, census forms, and everyday conversations about age. ## Cultural and Historical Context While 31 doesn't hold specific religious significance in Islamic tradition, it is mathematically notable as a prime number, a property that Arab mathematicians deeply studied during the Islamic Golden Age. Scholars like Al-Khwarizmi and Al-Kindi made significant contributions to number theory, and prime numbers held special fascination in mathematical treatises. The Arabic numeral representation **٣١** uses Eastern Arabic numerals (also called Arabic-Indic numerals) that are standard in most Arab countries, particularly in the Middle East. In North African countries like Morocco and Tunisia, Western Arabic numerals (1, 2, 3) are more commonly used due to French colonial influence. Understanding both systems is valuable for anyone engaging with Arabic texts from different regions. ## Tips for Mastering 31 and Similar Compound Numbers To effectively use 31 in Arabic, practice these key strategies: First, memorize the gender agreement pattern where **واحد/واحدة** changes but **ثلاثون** doesn't. Second, always remember that the counted noun stays singular and takes the accusative case with tanween. Third, practice the case changes for the number itself based on sentence structure. Finally, listen to native speakers using compound numbers in context, whether through news broadcasts, podcasts, or conversation, to internalize the natural rhythm and flow of these numerical expressions. With consistent practice, the initially complex grammar of Arabic numbers becomes intuitive and automatic.