19321

19321 is a natural number that follows 19320 and precedes 19322. In mathematics, it is notable for being a perfect square: 19321 equals 139 squared (139^2). Since 139 is prime, the prime factorization of 19321 is 139^2, and its positive divisors are 1, 139, and 19321.

As a square of a prime, 19321 belongs to the subset of numbers with simple divisor structure and is sometimes cited in discussions of factorization and number theory. The digit sum of 19321 is 16, giving a digital root of 7. These traits illustrate how certain five-digit integers can have distinctive arithmetic properties even when they appear ordinary.

Beyond pure mathematics, 19321 can appear as a five-digit code in various contexts, such as serial numbers, catalog identifiers, or postal ZIP codes, depending on the system in use. There is no widely known cultural, historical, or scientific significance attached specifically to the number 19321 outside of its mathematical property as 139^2. See also: 139, prime numbers, perfect squares.