315139816 has 8 divisors (see below), whose sum is σ = 590887170. Its totient is φ = 157569904.

The previous prime is 315139807. The next prime is 315139823. The reversal of 315139816 is 618931513.

It can be written as a sum of positive squares in only one way, i.e., 231344100 + 83795716 = 15210^2 + 9154^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19696231 + ... + 19696246.

Almost surely, 2^315139816 is an apocalyptic number.

It is an amenable number.

315139816 is a deficient number, since it is larger than the sum of its proper divisors (275747354).

315139816 is a wasteful number, since it uses less digits than its factorization.

315139816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39392483 (or 39392479 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 315139816 is about 17752.1777818948. The cubic root of 315139816 is about 680.5098655876.

The spelling of 315139816 in words is "three hundred fifteen million, one hundred thirty-nine thousand, eight hundred sixteen".