313113520 has 40 divisors (see below), whose sum is σ = 728997984. Its totient is φ = 125071872.

The previous prime is 313113469. The next prime is 313113527. The reversal of 313113520 is 25311313.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (313113527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66277 + ... + 70843.

Almost surely, 2^313113520 is an apocalyptic number.

It is an amenable number.

313113520 is an abundant number, since it is smaller than the sum of its proper divisors (415884464).

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

313113520 is a wasteful number, since it uses less digits than its factorization.

313113520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5437 (or 5431 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 313113520 is about 17695.0139869964. The cubic root of 313113520 is about 679.0482070402.

Adding to 313113520 its reverse (25311313), we get a palindrome (338424833).

The spelling of 313113520 in words is "three hundred thirteen million, one hundred thirteen thousand, five hundred twenty".