315221157157 has 16 divisors (see below), whose sum is σ = 323199942912. Its totient is φ = 307296302400.

The previous prime is 315221157149. The next prime is 315221157203. The reversal of 315221157157 is 751751122513.

It is not a de Polignac number, because 315221157157 - 2³ = 315221157149 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 (315221157137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55289407 + ... + 55295107.

It is an arithmetic number, because the mean of its divisors is an integer number (20199996432).

Almost surely, 2^315221157157 is an apocalyptic number.

It is an amenable number.

315221157157 is a deficient number, since it is larger than the sum of its proper divisors (7978785755).

315221157157 is a wasteful number, since it uses less digits than its factorization.

315221157157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10188.

The product of its digits is 73500, while the sum is 40.

The spelling of 315221157157 in words is "three hundred fifteen billion, two hundred twenty-one million, one hundred fifty-seven thousand, one hundred fifty-seven".