31015791023 has 12 divisors (see below), whose sum is σ = 36093893400. Its totient is φ = 26574427152.

The previous prime is 31015790989. The next prime is 31015791041. The reversal of 31015791023 is 32019751013.

It is a de Polignac number, because none of the positive numbers 2^k-31015791023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31015791223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740 + ... + 249062.

It is an arithmetic number, because the mean of its divisors is an integer number (3007824450).

Almost surely, 2^31015791023 is an apocalyptic number.

31015791023 is a deficient number, since it is larger than the sum of its proper divisors (5078102377).

31015791023 is a wasteful number, since it uses less digits than its factorization.

31015791023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250886 (or 250879 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The spelling of 31015791023 in words is "thirty-one billion, fifteen million, seven hundred ninety-one thousand, twenty-three".