313112331020 has 24 divisors (see below), whose sum is σ = 659610154224. Its totient is φ = 124849835456.

The previous prime is 313112331017. The next prime is 313112331023. The reversal of 313112331020 is 20133211313.

It is an interprime number because it is at equal distance from previous prime (313112331017) and next prime (313112331023).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 313112330983 and 313112331001.

It is not an unprimeable number, because it can be changed into a prime (313112331023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24687062 + ... + 24699741.

It is an arithmetic number, because the mean of its divisors is an integer number (27483756426).

Almost surely, 2^313112331020 is an apocalyptic number.

It is an amenable number.

313112331020 is an abundant number, since it is smaller than the sum of its proper divisors (346497823204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313112331020 is a wasteful number, since it uses less digits than its factorization.

313112331020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49387129 (or 49387127 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 313112331020 its reverse (20133211313), we get a palindrome (333245542333).

The spelling of 313112331020 in words is "three hundred thirteen billion, one hundred twelve million, three hundred thirty-one thousand, twenty".