31787056475 has 6 divisors (see below), whose sum is σ = 39415950060. Its totient is φ = 25429645160.

The previous prime is 31787056429. The next prime is 31787056481. The reversal of 31787056475 is 57465078713.

It is not a de Polignac number, because 31787056475 - 2²⁰ = 31786007899 is a prime.

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, 635741105 + ... + 635741154.

It is an arithmetic number, because the mean of its divisors is an integer number (6569325010).

Almost surely, 2^31787056475 is an apocalyptic number.

31787056475 is a deficient number, since it is larger than the sum of its proper divisors (7628893585).

31787056475 is a wasteful number, since it uses less digits than its factorization.

31787056475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1271482269 (or 1271482264 counting only the distinct ones).

The product of its (nonzero) digits is 4939200, while the sum is 53.

The spelling of 31787056475 in words is "thirty-one billion, seven hundred eighty-seven million, fifty-six thousand, four hundred seventy-five".