31868702975 has 12 divisors (see below), whose sum is σ = 40058525376. Its totient is φ = 25145714880.

The previous prime is 31868702951. The next prime is 31868702993. The reversal of 31868702975 is 57920786813.

It is a de Polignac number, because none of the positive numbers 2^k-31868702975 is a prime.

It is a super-2 number, since 2×31868702975² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31868702975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8729327 + ... + 8732976.

It is an arithmetic number, because the mean of its divisors is an integer number (3338210448).

Almost surely, 2^31868702975 is an apocalyptic number.

31868702975 is a deficient number, since it is larger than the sum of its proper divisors (8189822401).

31868702975 is a wasteful number, since it uses less digits than its factorization.

31868702975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17462386 (or 17462381 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 56.

The spelling of 31868702975 in words is "thirty-one billion, eight hundred sixty-eight million, seven hundred two thousand, nine hundred seventy-five".