31608131044 has 24 divisors (see below), whose sum is σ = 64924811840. Its totient is φ = 13180224096.

The previous prime is 31608131029. The next prime is 31608131053. The reversal of 31608131044 is 44013180613.

It is a junction number, because it is equal to n+sod(n) for n = 31608130997 and 31608131015.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15253854 + ... + 15255925.

Almost surely, 2^31608131044 is an apocalyptic number.

It is an amenable number.

31608131044 is an abundant number, since it is smaller than the sum of its proper divisors (33316680796).

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

31608131044 is a wasteful number, since it uses less digits than its factorization.

31608131044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30509827 (or 30509825 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 31608131044 in words is "thirty-one billion, six hundred eight million, one hundred thirty-one thousand, forty-four".