12319321 has 8 divisors (see below), whose sum is σ = 14131584. Its totient is φ = 10520160.

The previous prime is 12319313. The next prime is 12319337. The reversal of 12319321 is 12391321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12319321 - 2³ = 12319313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12319292 and 12319301.

It is not an unprimeable number, because it can be changed into a prime (12319361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (1766448).

Almost surely, 2^12319321 is an apocalyptic number.

It is an amenable number.

12319321 is a deficient number, since it is larger than the sum of its proper divisors (1812263).

12319321 is an equidigital number, since it uses as much as digits as its factorization.

12319321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6551.

The product of its digits is 324, while the sum is 22.

The square root of 12319321 is about 3509.8890295848. The cubic root of 12319321 is about 230.9558269639.

The spelling of 12319321 in words is "twelve million, three hundred nineteen thousand, three hundred twenty-one".