31475783164 has 24 divisors (see below), whose sum is σ = 64982263808. Its totient is φ = 13054471920.

The previous prime is 31475783123. The next prime is 31475783179. The reversal of 31475783164 is 46138757413.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 18130344 + ... + 18132079.

Almost surely, 2^31475783164 is an apocalyptic number.

It is an amenable number.

31475783164 is an abundant number, since it is smaller than the sum of its proper divisors (33506480644).

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

31475783164 is a wasteful number, since it uses less digits than its factorization.

31475783164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36262465 (or 36262463 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 49.

The spelling of 31475783164 in words is "thirty-one billion, four hundred seventy-five million, seven hundred eighty-three thousand, one hundred sixty-four".