321131425120 has 72 divisors (see below), whose sum is σ = 833913338832. Its totient is φ = 116775056640.

The previous prime is 321131425081. The next prime is 321131425141. The reversal of 321131425120 is 21524131123.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8274324 + ... + 8313043.

It is an arithmetic number, because the mean of its divisors is an integer number (11582129706).

Almost surely, 2^321131425120 is an apocalyptic number.

It is an amenable number.

321131425120 is an abundant number, since it is smaller than the sum of its proper divisors (512781913712).

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

321131425120 is a wasteful number, since it uses less digits than its factorization.

321131425120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16587404 (or 16587385 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 25.

Adding to 321131425120 its reverse (21524131123), we get a palindrome (342655556243).

The spelling of 321131425120 in words is "three hundred twenty-one billion, one hundred thirty-one million, four hundred twenty-five thousand, one hundred twenty".