321313131320 has 32 divisors (see below), whose sum is σ = 746275662720. Its totient is φ = 124379276160.

The previous prime is 321313131319. The next prime is 321313131431. The reversal of 321313131320 is 23131313123.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129560507 + ... + 129562986.

It is an arithmetic number, because the mean of its divisors is an integer number (23321114460).

Almost surely, 2^321313131320 is an apocalyptic number.

It is an amenable number.

321313131320 is an abundant number, since it is smaller than the sum of its proper divisors (424962531400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

321313131320 is a wasteful number, since it uses less digits than its factorization.

321313131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259123535 (or 259123531 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 321313131320 its reverse (23131313123), we get a palindrome (344444444443).

The spelling of 321313131320 in words is "three hundred twenty-one billion, three hundred thirteen million, one hundred thirty-one thousand, three hundred twenty".