315866855 has 4 divisors (see below), whose sum is σ = 379040232. Its totient is φ = 252693480.

The previous prime is 315866827. The next prime is 315866857. The reversal of 315866855 is 558668513.

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

It is not a de Polignac number, because 315866855 - 2²⁸ = 47431399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315866857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31586681 + ... + 31586690.

It is an arithmetic number, because the mean of its divisors is an integer number (94760058).

Almost surely, 2^315866855 is an apocalyptic number.

315866855 is a deficient number, since it is larger than the sum of its proper divisors (63173377).

315866855 is an equidigital number, since it uses as much as digits as its factorization.

315866855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63173376.

The product of its digits is 864000, while the sum is 47.

The square root of 315866855 is about 17772.6434443501. The cubic root of 315866855 is about 681.0327839873.

The spelling of 315866855 in words is "three hundred fifteen million, eight hundred sixty-six thousand, eight hundred fifty-five".