315904823 has 4 divisors (see below), whose sum is σ = 340205208. Its totient is φ = 291604440.

The previous prime is 315904819. The next prime is 315904837. The reversal of 315904823 is 328409513.

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

It is a cyclic number.

It is not a de Polignac number, because 315904823 - 2² = 315904819 is a prime.

It is a super-2 number, since 2×315904823² = 199591714389322658, 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 (315904843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12150173 + ... + 12150198.

It is an arithmetic number, because the mean of its divisors is an integer number (85051302).

Almost surely, 2^315904823 is an apocalyptic number.

315904823 is a deficient number, since it is larger than the sum of its proper divisors (24300385).

315904823 is a wasteful number, since it uses less digits than its factorization.

315904823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24300384.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 315904823 is about 17773.7115707440. The cubic root of 315904823 is about 681.0600701854.

The spelling of 315904823 in words is "three hundred fifteen million, nine hundred four thousand, eight hundred twenty-three".