31248852864 has 64 divisors (see below), whose sum is σ = 83024095440. Its totient is φ = 10413858816.

The previous prime is 31248852829. The next prime is 31248852881. The reversal of 31248852864 is 46825884213.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×31248852864³ (a number of 32 digits) contains 333 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, 2519382 + ... + 2531754.

Almost surely, 2^31248852864 is an apocalyptic number.

It is an amenable number.

31248852864 is an abundant number, since it is smaller than the sum of its proper divisors (51775242576).

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

31248852864 is a wasteful number, since it uses less digits than its factorization.

31248852864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18967 (or 18955 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 51.

The spelling of 31248852864 in words is "thirty-one billion, two hundred forty-eight million, eight hundred fifty-two thousand, eight hundred sixty-four".