2321

2321 is a natural number that follows 2320 and precedes 2322. In mathematics it is an odd composite number and a semiprime, since its prime factorization is 11 × 211, with both factors prime. Consequently, its positive divisors are 1, 11, 211, and 2321, and the sum of its divisors is 2544. The digit sum is 8, giving a digital root of 8. It is not a square or cube; the square root is approximately 48.17.

In various number bases, 2321 has the representations: binary 100100010001, octal 4421, and hexadecimal 0x911. In Roman numerals it is written MMCCCXXI. These representations reflect common ways of expressing integers across numeral systems and historical notation conventions.

As a calendar year, 2321 CE would be a future year in the third millennium. There are no widely noted historical events tied specifically to the year 2321 in standard reference works. Beyond its mathematical and numeral-system properties, 2321 does not have a canonical, widely recognized meaning or usage in public discourse.

See also: semiprime, integer factorization, numeral systems.