313112330420 has 24 divisors (see below), whose sum is σ = 658390979400. Its totient is φ = 125082058752.

The previous prime is 313112330413. The next prime is 313112330423. The reversal of 313112330420 is 24033211313.

It can be written as a sum of positive squares in 4 ways, for example, as 66949492516 + 246162837904 = 258746^2 + 496148^2 .

It is a super-2 number, since 2×313112330420² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313112330423) 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, 10163825 + ... + 10194584.

It is an arithmetic number, because the mean of its divisors is an integer number (27432957475).

Almost surely, 2^313112330420 is an apocalyptic number.

It is an amenable number.

313112330420 is an abundant number, since it is smaller than the sum of its proper divisors (345278648980).

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

313112330420 is a wasteful number, since it uses less digits than its factorization.

313112330420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20359187 (or 20359185 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 313112330420 its reverse (24033211313), we get a palindrome (337145541733).

The spelling of 313112330420 in words is "three hundred thirteen billion, one hundred twelve million, three hundred thirty thousand, four hundred twenty".