315154161 has 24 divisors (see below), whose sum is σ = 527589504. Its totient is φ = 177549120.

The previous prime is 315154157. The next prime is 315154163. The reversal of 315154161 is 161451513.

It is not a de Polignac number, because 315154161 - 2² = 315154157 is a prime.

It is a super-2 number, since 2×315154161² = 198644290391227842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315154163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30756 + ... + 39701.

It is an arithmetic number, because the mean of its divisors is an integer number (21982896).

Almost surely, 2^315154161 is an apocalyptic number.

It is an amenable number.

315154161 is a deficient number, since it is larger than the sum of its proper divisors (212435343).

315154161 is a wasteful number, since it uses less digits than its factorization.

315154161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70541 (or 70538 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 315154161 is about 17752.5818122323. The cubic root of 315154161 is about 680.5201909156.

The spelling of 315154161 in words is "three hundred fifteen million, one hundred fifty-four thousand, one hundred sixty-one".