3131294075957 has 4 divisors (see below), whose sum is σ = 3144286997676. Its totient is φ = 3118301154240.

The previous prime is 3131294075947. The next prime is 3131294075971. The reversal of 3131294075957 is 7595704921313.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1382237570596 + 1749056505361 = 1175686^2 + 1322519^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131294075957 - 2²² = 3131289881653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131294075927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6496460498 + ... + 6496460979.

It is an arithmetic number, because the mean of its divisors is an integer number (786071749419).

Almost surely, 2^{3131294075957} is an apocalyptic number.

It is an amenable number.

3131294075957 is a deficient number, since it is larger than the sum of its proper divisors (12992921719).

3131294075957 is a wasteful number, since it uses less digits than its factorization.

3131294075957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12992921718.

The product of its (nonzero) digits is 7144200, while the sum is 56.

The spelling of 3131294075957 in words is "three trillion, one hundred thirty-one billion, two hundred ninety-four million, seventy-five thousand, nine hundred fifty-seven".