520313320 has 16 divisors (see below), whose sum is σ = 1170705060. Its totient is φ = 208125312.

The previous prime is 520313303. The next prime is 520313333. The reversal of 520313320 is 23313025.

It can be written as a sum of positive squares in 2 ways, for example, as 516289284 + 4024036 = 22722^2 + 2006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6503877 + ... + 6503956.

Almost surely, 2^520313320 is an apocalyptic number.

It is an amenable number.

520313320 is an abundant number, since it is smaller than the sum of its proper divisors (650391740).

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

520313320 is a wasteful number, since it uses less digits than its factorization.

520313320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13007844 (or 13007840 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 520313320 is about 22810.3774629005. The cubic root of 520313320 is about 804.3066287510.

Adding to 520313320 its reverse (23313025), we get a palindrome (543626345).

The spelling of 520313320 in words is "five hundred twenty million, three hundred thirteen thousand, three hundred twenty".