520313311 has 6 divisors (see below), whose sum is σ = 605262480. Its totient is φ = 445982796.

The previous prime is 520313303. The next prime is 520313333. The reversal of 520313311 is 113313025.

It is not a de Polignac number, because 520313311 - 2³ = 520313303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520313371) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5309271 + ... + 5309368.

It is an arithmetic number, because the mean of its divisors is an integer number (100877080).

Almost surely, 2^520313311 is an apocalyptic number.

520313311 is a deficient number, since it is larger than the sum of its proper divisors (84949169).

520313311 is a wasteful number, since it uses less digits than its factorization.

520313311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10618653 (or 10618646 counting only the distinct ones).

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

The square root of 520313311 is about 22810.3772656219. The cubic root of 520313311 is about 804.3066241135.

Adding to 520313311 its reverse (113313025), we get a palindrome (633626336).

The spelling of 520313311 in words is "five hundred twenty million, three hundred thirteen thousand, three hundred eleven".