31376885688 has 48 divisors (see below), whose sum is σ = 86955331320. Its totient is φ = 10215729216.

The previous prime is 31376885663. The next prime is 31376885689. The reversal of 31376885688 is 88658867313.

31376885688 is a `hidden beast` number, since 3 + 1 + 3 + 7 + 68 + 8 + 568 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31376885689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5064231 + ... + 5070422.

Almost surely, 2^31376885688 is an apocalyptic number.

It is an amenable number.

31376885688 is an abundant number, since it is smaller than the sum of its proper divisors (55578445632).

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

31376885688 is a wasteful number, since it uses less digits than its factorization.

31376885688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10134708 (or 10134701 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 31376885688 in words is "thirty-one billion, three hundred seventy-six million, eight hundred eighty-five thousand, six hundred eighty-eight".