331320013031 has 6 divisors (see below), whose sum is σ = 385413076440. Its totient is φ = 283988582556.

The previous prime is 331320013021. The next prime is 331320013043. The reversal of 331320013031 is 130310023133.

It is not a de Polignac number, because 331320013031 - 2²² = 331315818727 is a prime.

It is a super-2 number, since 2×331320013031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 331320012994 and 331320013012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331320013021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3380816411 + ... + 3380816508.

It is an arithmetic number, because the mean of its divisors is an integer number (64235512740).

Almost surely, 2^331320013031 is an apocalyptic number.

331320013031 is a deficient number, since it is larger than the sum of its proper divisors (54093063409).

331320013031 is an equidigital number, since it uses as much as digits as its factorization.

331320013031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761632933 (or 6761632926 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 331320013031 its reverse (130310023133), we get a palindrome (461630036164).

The spelling of 331320013031 in words is "three hundred thirty-one billion, three hundred twenty million, thirteen thousand, thirty-one".