331039407656 has 16 divisors (see below), whose sum is σ = 623948624640. Its totient is φ = 164653107760.

The previous prime is 331039407637. The next prime is 331039407667. The reversal of 331039407656 is 656704930133.

It is a self number, because there is not a number n which added to its sum of digits gives 331039407656.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108322886 + ... + 108325941.

It is an arithmetic number, because the mean of its divisors is an integer number (38996789040).

Almost surely, 2^331039407656 is an apocalyptic number.

It is an amenable number.

331039407656 is a deficient number, since it is larger than the sum of its proper divisors (292909216984).

331039407656 is a wasteful number, since it uses less digits than its factorization.

331039407656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216649024 (or 216649020 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 47.

The spelling of 331039407656 in words is "three hundred thirty-one billion, thirty-nine million, four hundred seven thousand, six hundred fifty-six".