313131400344242 has 16 divisors (see below), whose sum is σ = 494594767962240. Its totient is φ = 148272369937488.

The previous prime is 313131400344227. The next prime is 313131400344253. The reversal of 313131400344242 is 242443004131313.

It is a super-2 number, since 2×313131400344242² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1472954138 + ... + 1473166709.

It is an arithmetic number, because the mean of its divisors is an integer number (30912172997640).

Almost surely, 2^{313131400344242} is an apocalyptic number.

313131400344242 is a deficient number, since it is larger than the sum of its proper divisors (181463367617998).

313131400344242 is a wasteful number, since it uses less digits than its factorization.

313131400344242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2946123665.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 313131400344242 its reverse (242443004131313), we get a palindrome (555574404475555).

The spelling of 313131400344242 in words is "three hundred thirteen trillion, one hundred thirty-one billion, four hundred million, three hundred forty-four thousand, two hundred forty-two".