315343872 has 66 divisors (see below), whose sum is σ = 910575198. Its totient is φ = 105111552.

The previous prime is 315343841. The next prime is 315343877. The reversal of 315343872 is 278343513.

315343872 is a `hidden beast` number, since 3 + 153 + 438 + 72 = 666.

It can be written as a sum of positive squares in only one way, i.e., 312016896 + 3326976 = 17664^2 + 1824^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (315343877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7893 + ... + 26324.

Almost surely, 2^315343872 is an apocalyptic number.

315343872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

315343872 is an abundant number, since it is smaller than the sum of its proper divisors (595231326).

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

315343872 is a wasteful number, since it uses less digits than its factorization.

315343872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34243 (or 34222 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 315343872 is about 17757.9242030143. The cubic root of 315343872 is about 680.6567127470.

The spelling of 315343872 in words is "three hundred fifteen million, three hundred forty-three thousand, eight hundred seventy-two".