2331

2331 is a natural number that follows 2330 and precedes 2332. It is odd and composite.

Prime factorization and properties: 2331 = 3^2 × 7 × 37. It is divisible by 9 and by 3. The sum of its decimal digits is 9, giving a digital root of 9. It is also a happy number, since the iterative process of summing the squares of its digits leads to 1 (2331 → 23 → 13 → 10 → 1).

Representations in different bases: in binary it is 100100011011, and in hexadecimal it is 0x91B. In Roman numerals, 2331 is written as MMCCCXXXI.

Calendrical and contextual notes: as a year, 2331 AD would fall in the 24th century. In other contexts, 2331 may appear as a model number, catalog entry, or identifier, but there is no widely recognized historical event or mathematical property uniquely tied to the number beyond its intrinsic numeric characteristics.