315161478 has 36 divisors (see below), whose sum is σ = 688107420. Its totient is φ = 104250888.

The previous prime is 315161477. The next prime is 315161489. The reversal of 315161478 is 874161513.

315161478 is a `hidden beast` number, since 31 + 5 + 1 + 614 + 7 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315161477) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 477913 + ... + 478571.

It is an arithmetic number, because the mean of its divisors is an integer number (19114095).

Almost surely, 2^315161478 is an apocalyptic number.

315161478 is an abundant number, since it is smaller than the sum of its proper divisors (372945942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315161478 is a wasteful number, since it uses less digits than its factorization.

315161478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 827 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 315161478 is about 17752.7878937366. The cubic root of 315161478 is about 680.5254574680.

The spelling of 315161478 in words is "three hundred fifteen million, one hundred sixty-one thousand, four hundred seventy-eight".