315057215 has 32 divisors (see below), whose sum is σ = 423650304. Its totient is φ = 222963840.

The previous prime is 315057203. The next prime is 315057217. The reversal of 315057215 is 512750513.

It is a happy number.

It is not a de Polignac number, because 315057215 - 2¹⁸ = 314795071 is a prime.

It is a super-2 number, since 2×315057215² = 198522097447112450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315057217) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 793397 + ... + 793793.

It is an arithmetic number, because the mean of its divisors is an integer number (13239072).

Almost surely, 2^315057215 is an apocalyptic number.

315057215 is a deficient number, since it is larger than the sum of its proper divisors (108593089).

315057215 is a wasteful number, since it uses less digits than its factorization.

315057215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 767.

The product of its (nonzero) digits is 5250, while the sum is 29.

The square root of 315057215 is about 17749.8511261362. The cubic root of 315057215 is about 680.4504044591.

The spelling of 315057215 in words is "three hundred fifteen million, fifty-seven thousand, two hundred fifteen".