31838630164 has 48 divisors (see below), whose sum is σ = 63747927936. Its totient is φ = 13772528000.

The previous prime is 31838630147. The next prime is 31838630167. The reversal of 31838630164 is 46103683813.

It is a self number, because there is not a number n which added to its sum of digits gives 31838630164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31838630167) 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 15 ways as a sum of consecutive naturals, for example, 119514 + ... + 279214.

It is an arithmetic number, because the mean of its divisors is an integer number (1328081832).

Almost surely, 2^31838630164 is an apocalyptic number.

It is an amenable number.

31838630164 is an abundant number, since it is smaller than the sum of its proper divisors (31909297772).

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

31838630164 is a wasteful number, since it uses less digits than its factorization.

31838630164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159936 (or 159934 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 31838630164 in words is "thirty-one billion, eight hundred thirty-eight million, six hundred thirty thousand, one hundred sixty-four".