315472313 has 4 divisors (see below), whose sum is σ = 339739428. Its totient is φ = 291205200.

The previous prime is 315472309. The next prime is 315472343. The reversal of 315472313 is 313274513.

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 174028864 + 141443449 = 13192^2 + 11893^2 .

It is not a de Polignac number, because 315472313 - 2² = 315472309 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315472303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12133538 + ... + 12133563.

It is an arithmetic number, because the mean of its divisors is an integer number (84934857).

Almost surely, 2^315472313 is an apocalyptic number.

It is an amenable number.

315472313 is a deficient number, since it is larger than the sum of its proper divisors (24267115).

315472313 is a wasteful number, since it uses less digits than its factorization.

315472313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24267114.

The product of its digits is 7560, while the sum is 29.

The square root of 315472313 is about 17761.5402766765. The cubic root of 315472313 is about 680.7491117331.

The spelling of 315472313 in words is "three hundred fifteen million, four hundred seventy-two thousand, three hundred thirteen".