313475721 has 16 divisors (see below), whose sum is σ = 456462720. Its totient is φ = 190189440.

The previous prime is 313475707. The next prime is 313475741. The reversal of 313475721 is 127574313.

It is not a de Polignac number, because 313475721 - 2⁷ = 313475593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313475741) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 53836 + ... + 59373.

It is an arithmetic number, because the mean of its divisors is an integer number (28528920).

Almost surely, 2^313475721 is an apocalyptic number.

It is an amenable number.

313475721 is a deficient number, since it is larger than the sum of its proper divisors (142986999).

313475721 is a wasteful number, since it uses less digits than its factorization.

313475721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113296.

The product of its digits is 17640, while the sum is 33.

The square root of 313475721 is about 17705.2455786414. The cubic root of 313475721 is about 679.3099408290.

The spelling of 313475721 in words is "three hundred thirteen million, four hundred seventy-five thousand, seven hundred twenty-one".