31712755440631 has 16 divisors (see below), whose sum is σ = 32000475230208. Its totient is φ = 31425648408000.

The previous prime is 31712755440629. The next prime is 31712755440637. The reversal of 31712755440631 is 13604455721713.

It is a cyclic number.

It is not a de Polignac number, because 31712755440631 - 2¹ = 31712755440629 is a prime.

It is a super-2 number, since 2×31712755440631² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31712755440637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 450103956 + ... + 450174406.

It is an arithmetic number, because the mean of its divisors is an integer number (2000029701888).

Almost surely, 2^{31712755440631} is an apocalyptic number.

31712755440631 is a deficient number, since it is larger than the sum of its proper divisors (287719789577).

31712755440631 is a wasteful number, since it uses less digits than its factorization.

31712755440631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74742.

The product of its (nonzero) digits is 2116800, while the sum is 49.

The spelling of 31712755440631 in words is "thirty-one trillion, seven hundred twelve billion, seven hundred fifty-five million, four hundred forty thousand, six hundred thirty-one".