315634791 has 4 divisors (see below), whose sum is σ = 420846392. Its totient is φ = 210423192.

The previous prime is 315634763. The next prime is 315634793. The reversal of 315634791 is 197436513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 197436513 = 3 ⋅65812171.

It is not a de Polignac number, because 315634791 - 2¹⁸ = 315372647 is a prime.

It is a super-2 number, since 2×315634791² = 199250642579227362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315634793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52605796 + ... + 52605801.

It is an arithmetic number, because the mean of its divisors is an integer number (105211598).

Almost surely, 2^315634791 is an apocalyptic number.

315634791 is a deficient number, since it is larger than the sum of its proper divisors (105211601).

315634791 is a wasteful number, since it uses less digits than its factorization.

315634791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105211600.

The product of its digits is 68040, while the sum is 39.

The square root of 315634791 is about 17766.1135592453. The cubic root of 315634791 is about 680.8659606254.

The spelling of 315634791 in words is "three hundred fifteen million, six hundred thirty-four thousand, seven hundred ninety-one".