31507947034473 has 96 divisors (see below), whose sum is σ = 52713896874240. Its totient is φ = 16388095426560.

The previous prime is 31507947034457. The next prime is 31507947034549. The reversal of 31507947034473 is 37443074970513.

It is a happy number.

It is not a de Polignac number, because 31507947034473 - 2⁴ = 31507947034457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31507947034573) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1368174123 + ... + 1368197151.

It is an arithmetic number, because the mean of its divisors is an integer number (549103092440).

Almost surely, 2^{31507947034473} is an apocalyptic number.

It is an amenable number.

31507947034473 is a deficient number, since it is larger than the sum of its proper divisors (21205949839767).

31507947034473 is a wasteful number, since it uses less digits than its factorization.

31507947034473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28419 (or 28406 counting only the distinct ones).

The product of its (nonzero) digits is 26671680, while the sum is 57.

The spelling of 31507947034473 in words is "thirty-one trillion, five hundred seven billion, nine hundred forty-seven million, thirty-four thousand, four hundred seventy-three".