31213969492833 has 16 divisors (see below), whose sum is σ = 47026696036800. Its totient is φ = 20456612773920.

The previous prime is 31213969492829. The next prime is 31213969492877. The reversal of 31213969492833 is 33829496931213.

31213969492833 is a `hidden beast` number, since 3 + 1 + 2 + 1 + 3 + 9 + 69 + 492 + 83 + 3 = 666.

It is not a de Polignac number, because 31213969492833 - 2² = 31213969492829 is a prime.

It is a super-2 number, since 2×31213969492833² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31213969412833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9797226748 + ... + 9797229933.

It is an arithmetic number, because the mean of its divisors is an integer number (2939168502300).

Almost surely, 2^{31213969492833} is an apocalyptic number.

It is an amenable number.

31213969492833 is a deficient number, since it is larger than the sum of its proper divisors (15812726543967).

31213969492833 is a wasteful number, since it uses less digits than its factorization.

31213969492833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19594456749 (or 19594456743 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 63.

The spelling of 31213969492833 in words is "thirty-one trillion, two hundred thirteen billion, nine hundred sixty-nine million, four hundred ninety-two thousand, eight hundred thirty-three".