313331020331 has 32 divisors (see below), whose sum is σ = 373220774400. Its totient is φ = 262872818208.

The previous prime is 313331020253. The next prime is 313331020333. The reversal of 313331020331 is 133020133313.

It is not a de Polignac number, because 313331020331 - 2²² = 313326826027 is a prime.

It is a super-2 number, since 2×313331020331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313331020297 and 313331020306.

It is not an unprimeable number, because it can be changed into a prime (313331020333) 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, 3564596 + ... + 3651438.

It is an arithmetic number, because the mean of its divisors is an integer number (11663149200).

Almost surely, 2^313331020331 is an apocalyptic number.

313331020331 is a deficient number, since it is larger than the sum of its proper divisors (59889754069).

313331020331 is an equidigital number, since it uses as much as digits as its factorization.

313331020331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87088 (or 87074 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 23.

Adding to 313331020331 its reverse (133020133313), we get a palindrome (446351153644).

The spelling of 313331020331 in words is "three hundred thirteen billion, three hundred thirty-one million, twenty thousand, three hundred thirty-one".