315945161 has 8 divisors (see below), whose sum is σ = 361311360. Its totient is φ = 270636768.

The previous prime is 315945151. The next prime is 315945173. The reversal of 315945161 is 161549513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 315945161 - 2²⁶ = 248836297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (315945121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2021 + ... + 25218.

It is an arithmetic number, because the mean of its divisors is an integer number (45163920).

Almost surely, 2^315945161 is an apocalyptic number.

It is an amenable number.

315945161 is a deficient number, since it is larger than the sum of its proper divisors (45366199).

315945161 is a wasteful number, since it uses less digits than its factorization.

315945161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28903.

The product of its digits is 16200, while the sum is 35.

The square root of 315945161 is about 17774.8463003200. The cubic root of 315945161 is about 681.0890572198.

The spelling of 315945161 in words is "three hundred fifteen million, nine hundred forty-five thousand, one hundred sixty-one".