520031303113 has 12 divisors (see below), whose sum is σ = 613221149460. Its totient is φ = 439635071232.

The previous prime is 520031303107. The next prime is 520031303123. The reversal of 520031303113 is 311303130025.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 400400403984 + 119630899129 = 632772^2 + 345877^2 .

It is not a de Polignac number, because 520031303113 - 2⁵ = 520031303081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520031303123) 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, 72687408 + ... + 72694561.

It is an arithmetic number, because the mean of its divisors is an integer number (51101762455).

Almost surely, 2^520031303113 is an apocalyptic number.

It is an amenable number.

520031303113 is a deficient number, since it is larger than the sum of its proper divisors (93189846347).

520031303113 is a wasteful number, since it uses less digits than its factorization.

520031303113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145382056 (or 145382049 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 22.

Adding to 520031303113 its reverse (311303130025), we get a palindrome (831334433138).

The spelling of 520031303113 in words is "five hundred twenty billion, thirty-one million, three hundred three thousand, one hundred thirteen".