31946864913 has 8 divisors (see below), whose sum is σ = 47328688800. Its totient is φ = 21297909924.

The previous prime is 31946864909. The next prime is 31946864923.

31946864913 is a `hidden beast` number, since 3 + 1 + 94 + 68 + 6 + 491 + 3 = 666.

31946864913 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31946864913 - 2² = 31946864909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31946864913.

It is not an unprimeable number, because it can be changed into a prime (31946864923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591608583 + ... + 591608636.

It is an arithmetic number, because the mean of its divisors is an integer number (5916086100).

Almost surely, 2^31946864913 is an apocalyptic number.

It is an amenable number.

31946864913 is a deficient number, since it is larger than the sum of its proper divisors (15381823887).

31946864913 is a wasteful number, since it uses less digits than its factorization.

31946864913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1183217228 (or 1183217222 counting only the distinct ones).

The product of its digits is 3359232, while the sum is 54.

The spelling of 31946864913 in words is "thirty-one billion, nine hundred forty-six million, eight hundred sixty-four thousand, nine hundred thirteen".