315131443904 has 28 divisors (see below), whose sum is σ = 630262904064. Its totient is φ = 156325042944.

The previous prime is 315131443897. The next prime is 315131443927. The reversal of 315131443904 is 409344131513.

315131443904 is an admirable number.

It is a super-2 number, since 2×315131443904² (a number of 24 digits) contains 22 as substring.

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, 19377419 + ... + 19393674.

Almost surely, 2^315131443904 is an apocalyptic number.

It is an amenable number.

315131443904 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

315131443904 is a wasteful number, since it uses less digits than its factorization.

315131443904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38771232 (or 38771222 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The spelling of 315131443904 in words is "three hundred fifteen billion, one hundred thirty-one million, four hundred forty-three thousand, nine hundred four".