315674721 has 48 divisors (see below), whose sum is σ = 496454400. Its totient is φ = 192655584.

The previous prime is 315674693. The next prime is 315674741. The reversal of 315674721 is 127476513.

It is a happy number.

315674721 is a `hidden beast` number, since 31 + 567 + 47 + 21 = 666.

It is not a de Polignac number, because 315674721 - 2¹⁷ = 315543649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (315674741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 675730 + ... + 676196.

It is an arithmetic number, because the mean of its divisors is an integer number (10342800).

Almost surely, 2^315674721 is an apocalyptic number.

It is an amenable number.

315674721 is a deficient number, since it is larger than the sum of its proper divisors (180779679).

315674721 is a wasteful number, since it uses less digits than its factorization.

315674721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 615 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 315674721 is about 17767.2372922748. The cubic root of 315674721 is about 680.8946708439.

It can be divided in two parts, 3156 and 74721, that added together give a palindrome (77877).

The spelling of 315674721 in words is "three hundred fifteen million, six hundred seventy-four thousand, seven hundred twenty-one".