520310313 has 24 divisors (see below), whose sum is σ = 797516928. Its totient is φ = 325752192.

The previous prime is 520310309. The next prime is 520310333. The reversal of 520310313 is 313013025.

It is not a de Polignac number, because 520310313 - 2² = 520310309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520310303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71020 + ... + 78002.

It is an arithmetic number, because the mean of its divisors is an integer number (33229872).

Almost surely, 2^520310313 is an apocalyptic number.

It is an amenable number.

520310313 is a deficient number, since it is larger than the sum of its proper divisors (277206615).

520310313 is a wasteful number, since it uses less digits than its factorization.

520310313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7493 (or 7490 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 520310313 is about 22810.3115498233. The cubic root of 520310313 is about 804.3050793290.

Adding to 520310313 its reverse (313013025), we get a palindrome (833323338).

The spelling of 520310313 in words is "five hundred twenty million, three hundred ten thousand, three hundred thirteen".