315129631797 has 48 divisors (see below), whose sum is σ = 478453143168. Its totient is φ = 199486573440.

The previous prime is 315129631769. The next prime is 315129631807. The reversal of 315129631797 is 797136921513.

315129631797 is a `hidden beast` number, since 3 + 1 + 512 + 9 + 6 + 31 + 7 + 97 = 666.

It is not a de Polignac number, because 315129631797 - 2¹⁰ = 315129630773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315129631717) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18790738 + ... + 18807500.

It is an arithmetic number, because the mean of its divisors is an integer number (9967773816).

Almost surely, 2^315129631797 is an apocalyptic number.

It is an amenable number.

315129631797 is a deficient number, since it is larger than the sum of its proper divisors (163323511371).

315129631797 is a wasteful number, since it uses less digits than its factorization.

315129631797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17450 (or 17447 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 54.

The spelling of 315129631797 in words is "three hundred fifteen billion, one hundred twenty-nine million, six hundred thirty-one thousand, seven hundred ninety-seven".