31330311032013 has 32 divisors (see below), whose sum is σ = 50723797847040. Its totient is φ = 16802257991040.

The previous prime is 31330311031991. The next prime is 31330311032017. The reversal of 31330311032013 is 31023011303313.

It is not a de Polignac number, because 31330311032013 - 2²⁵ = 31330277477581 is a prime.

It is a super-2 number, since 2×31330311032013² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330311032017) 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, 366882928 + ... + 366968313.

It is an arithmetic number, because the mean of its divisors is an integer number (1585118682720).

Almost surely, 2^{31330311032013} is an apocalyptic number.

It is an amenable number.

31330311032013 is a deficient number, since it is larger than the sum of its proper divisors (19393486815027).

31330311032013 is a wasteful number, since it uses less digits than its factorization.

31330311032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733851377.

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

Adding to 31330311032013 its reverse (31023011303313), we get a palindrome (62353322335326).

The spelling of 31330311032013 in words is "thirty-one trillion, three hundred thirty billion, three hundred eleven million, thirty-two thousand, thirteen".