315845155 has 4 divisors (see below), whose sum is σ = 379014192. Its totient is φ = 252676120.

The previous prime is 315845149. The next prime is 315845161. The reversal of 315845155 is 551548513.

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

It is an interprime number because it is at equal distance from previous prime (315845149) and next prime (315845161).

It is not a de Polignac number, because 315845155 - 2³ = 315845147 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31584511 + ... + 31584520.

It is an arithmetic number, because the mean of its divisors is an integer number (94753548).

Almost surely, 2^315845155 is an apocalyptic number.

315845155 is a deficient number, since it is larger than the sum of its proper divisors (63169037).

315845155 is an equidigital number, since it uses as much as digits as its factorization.

315845155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63169036.

The product of its digits is 60000, while the sum is 37.

The square root of 315845155 is about 17772.0329450516. The cubic root of 315845155 is about 681.0171880174.

The spelling of 315845155 in words is "three hundred fifteen million, eight hundred forty-five thousand, one hundred fifty-five".