31712900842 has 12 divisors (see below), whose sum is σ = 55335776130. Its totient is φ = 13591243176.

The previous prime is 31712900833. The next prime is 31712900851. The reversal of 31712900842 is 24800921713.

It is an interprime number because it is at equal distance from previous prime (31712900833) and next prime (31712900851).

It can be written as a sum of positive squares in only one way, i.e., 28452605041 + 3260295801 = 168679^2 + 57099^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 161800417 + ... + 161800612.

Almost surely, 2^31712900842 is an apocalyptic number.

31712900842 is a deficient number, since it is larger than the sum of its proper divisors (23622875288).

31712900842 is a wasteful number, since it uses less digits than its factorization.

31712900842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323601045 (or 323601038 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 31712900842 in words is "thirty-one billion, seven hundred twelve million, nine hundred thousand, eight hundred forty-two".