31688271160 has 128 divisors (see below), whose sum is σ = 91567687680. Its totient is φ = 9592754688.

The previous prime is 31688271151. The next prime is 31688271161. The reversal of 31688271160 is 6117288613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31688271161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 105532 + ... + 272971.

It is an arithmetic number, because the mean of its divisors is an integer number (715372560).

Almost surely, 2^31688271160 is an apocalyptic number.

It is an amenable number.

31688271160 is an abundant number, since it is smaller than the sum of its proper divisors (59879416520).

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

31688271160 is a wasteful number, since it uses less digits than its factorization.

31688271160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378557 (or 378553 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 31688271160 in words is "thirty-one billion, six hundred eighty-eight million, two hundred seventy-one thousand, one hundred sixty".