313131400344243 has 96 divisors (see below), whose sum is σ = 514045160513280. Its totient is φ = 188202014058240.

The previous prime is 313131400344227. The next prime is 313131400344253. The reversal of 313131400344243 is 342443004131313.

313131400344243 is a `hidden beast` number, since 3 + 1 + 3 + 1 + 3 + 1 + 400 + 3 + 4 + 4 + 243 = 666.

It is not a de Polignac number, because 313131400344243 - 2⁴ = 313131400344227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 313131400344198 and 313131400344207.

It is not an unprimeable number, because it can be changed into a prime (313131400344253) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3392603671 + ... + 3392695967.

It is an arithmetic number, because the mean of its divisors is an integer number (5354637088680).

Almost surely, 2^{313131400344243} is an apocalyptic number.

313131400344243 is a deficient number, since it is larger than the sum of its proper divisors (200913760169037).

313131400344243 is a wasteful number, since it uses less digits than its factorization.

313131400344243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109666 (or 109647 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

Adding to 313131400344243 its reverse (342443004131313), we get a palindrome (655574404475556).

The spelling of 313131400344243 in words is "three hundred thirteen trillion, one hundred thirty-one billion, four hundred million, three hundred forty-four thousand, two hundred forty-three".