313525521 has 12 divisors (see below), whose sum is σ = 453192948. Its totient is φ = 208868064.

The previous prime is 313525519. The next prime is 313525559. The reversal of 313525521 is 125525313.

It is a happy number.

313525521 is a `hidden beast` number, since 3 + 135 + 2 + 5 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 130302225 + 183223296 = 11415^2 + 13536^2 .

It is not a de Polignac number, because 313525521 - 2¹ = 313525519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313525501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1771 + ... + 25103.

It is an arithmetic number, because the mean of its divisors is an integer number (37766079).

Almost surely, 2^313525521 is an apocalyptic number.

It is an amenable number.

313525521 is a deficient number, since it is larger than the sum of its proper divisors (139667427).

313525521 is a wasteful number, since it uses less digits than its factorization.

313525521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24832 (or 24829 counting only the distinct ones).

The product of its digits is 4500, while the sum is 27.

The square root of 313525521 is about 17706.6518856615. The cubic root of 313525521 is about 679.3459115507.

The spelling of 313525521 in words is "three hundred thirteen million, five hundred twenty-five thousand, five hundred twenty-one".