315979171 has 2 divisors, whose sum is σ = 315979172. Its totient is φ = 315979170.

The previous prime is 315979159. The next prime is 315979189. The reversal of 315979171 is 171979513.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 315979171 - 2⁹ = 315978659 is a prime.

It is not a weakly prime, because it can be changed into another prime (315979141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157989585 + 157989586.

It is an arithmetic number, because the mean of its divisors is an integer number (157989586).

Almost surely, 2^315979171 is an apocalyptic number.

315979171 is a deficient number, since it is larger than the sum of its proper divisors (1).

315979171 is an equidigital number, since it uses as much as digits as its factorization.

315979171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 59535, while the sum is 43.

The square root of 315979171 is about 17775.8029635795. The cubic root of 315979171 is about 681.1134950132.

The spelling of 315979171 in words is "three hundred fifteen million, nine hundred seventy-nine thousand, one hundred seventy-one".