31241979538 has 48 divisors (see below), whose sum is σ = 59104527552. Its totient is φ = 12123540000.

The previous prime is 31241979529. The next prime is 31241979557. The reversal of 31241979538 is 83597914213.

It is a super-2 number, since 2×31241979538² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388456 + ... + 461932.

It is an arithmetic number, because the mean of its divisors is an integer number (1231344324).

Almost surely, 2^31241979538 is an apocalyptic number.

31241979538 is a deficient number, since it is larger than the sum of its proper divisors (27862548014).

31241979538 is a wasteful number, since it uses less digits than its factorization.

31241979538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73759 (or 73748 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 52.

The spelling of 31241979538 in words is "thirty-one billion, two hundred forty-one million, nine hundred seventy-nine thousand, five hundred thirty-eight".