31940036775 has 24 divisors (see below), whose sum is σ = 58675031760. Its totient is φ = 17034685920.

The previous prime is 31940036753. The next prime is 31940036803. The reversal of 31940036775 is 57763004913.

It is not a de Polignac number, because 31940036775 - 2¹³ = 31940028583 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 31940036775.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23658612 + ... + 23659961.

It is an arithmetic number, because the mean of its divisors is an integer number (2444792990).

Almost surely, 2^31940036775 is an apocalyptic number.

31940036775 is a deficient number, since it is larger than the sum of its proper divisors (26734994985).

31940036775 is a wasteful number, since it uses less digits than its factorization.

31940036775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47318592 (or 47318581 counting only the distinct ones).

The product of its (nonzero) digits is 476280, while the sum is 45.

The spelling of 31940036775 in words is "thirty-one billion, nine hundred forty million, thirty-six thousand, seven hundred seventy-five".