520313013 has 12 divisors (see below), whose sum is σ = 819887328. Its totient is φ = 315341160.

The previous prime is 520313011. The next prime is 520313023. The reversal of 520313013 is 310313025.

520313013 is a `hidden beast` number, since 520 + 3 + 130 + 13 = 666.

It is not a de Polignac number, because 520313013 - 2¹ = 520313011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520313011) 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, 2627745 + ... + 2627942.

It is an arithmetic number, because the mean of its divisors is an integer number (68323944).

Almost surely, 2^520313013 is an apocalyptic number.

It is an amenable number.

520313013 is a deficient number, since it is larger than the sum of its proper divisors (299574315).

520313013 is a wasteful number, since it uses less digits than its factorization.

520313013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5255704 (or 5255701 counting only the distinct ones).

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

The square root of 520313013 is about 22810.3707335063. The cubic root of 520313013 is about 804.3064705628.

Adding to 520313013 its reverse (310313025), we get a palindrome (830626038).

The spelling of 520313013 in words is "five hundred twenty million, three hundred thirteen thousand, thirteen".