31331213313 has 32 divisors (see below), whose sum is σ = 45204848640. Its totient is φ = 19235102400.

The previous prime is 31331213293. The next prime is 31331213321.

31331213313 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 31331213313 - 2²⁰ = 31330164737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31331213363) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2421006 + ... + 2433912.

It is an arithmetic number, because the mean of its divisors is an integer number (1412651520).

Almost surely, 2^31331213313 is an apocalyptic number.

It is an amenable number.

31331213313 is a deficient number, since it is larger than the sum of its proper divisors (13873635327).

31331213313 is a wasteful number, since it uses less digits than its factorization.

31331213313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14117.

The product of its digits is 1458, while the sum is 24.

The spelling of 31331213313 in words is "thirty-one billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred thirteen".