31320400402313 has 32 divisors (see below), whose sum is σ = 36590194713600. Its totient is φ = 26527888411200.

The previous prime is 31320400402271. The next prime is 31320400402321.

31320400402313 is nontrivially palindromic in base 10.

It is a de Polignac number, because none of the positive numbers 2^k-31320400402313 is a prime.

It is a super-2 number, since 2×31320400402313² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31320400402813) 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, 7997903 + ... + 11251988.

It is an arithmetic number, because the mean of its divisors is an integer number (1143443584800).

Almost surely, 2^{31320400402313} is an apocalyptic number.

It is an amenable number.

31320400402313 is a deficient number, since it is larger than the sum of its proper divisors (5269794311287).

31320400402313 is a wasteful number, since it uses less digits than its factorization.

31320400402313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19250093.

The product of its (nonzero) digits is 5184, while the sum is 26.

It can be divided in two parts, 31320400 and 402313, that added together give a palindrome (31722713).

The spelling of 31320400402313 in words is "thirty-one trillion, three hundred twenty billion, four hundred million, four hundred two thousand, three hundred thirteen".