31304900928 has 56 divisors (see below), whose sum is σ = 94660061632. Its totient is φ = 8944257024.

The previous prime is 31304900867. The next prime is 31304900933. The reversal of 31304900928 is 82900940313.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×31304900928² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11644825 + ... + 11647512.

Almost surely, 2^31304900928 is an apocalyptic number.

It is an amenable number.

31304900928 is an abundant number, since it is smaller than the sum of its proper divisors (63355160704).

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

31304900928 is a wasteful number, since it uses less digits than its factorization.

31304900928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23292359 (or 23292349 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 31304900928 in words is "thirty-one billion, three hundred four million, nine hundred thousand, nine hundred twenty-eight".