520231113 has 16 divisors (see below), whose sum is σ = 771940800. Its totient is φ = 346268160.

The previous prime is 520231091. The next prime is 520231133. The reversal of 520231113 is 311132025.

520231113 is a `hidden beast` number, since 520 + 2 + 31 + 113 = 666.

It is not a de Polignac number, because 520231113 - 2⁸ = 520230857 is a prime.

It is not an unprimeable number, because it can be changed into a prime (520231133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2278 + ... + 32336.

It is an arithmetic number, because the mean of its divisors is an integer number (48246300).

Almost surely, 2^520231113 is an apocalyptic number.

It is an amenable number.

520231113 is a deficient number, since it is larger than the sum of its proper divisors (251709687).

520231113 is a wasteful number, since it uses less digits than its factorization.

520231113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30709 (or 30703 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 520231113 is about 22808.5754267995. The cubic root of 520231113 is about 804.2642676614.

Adding to 520231113 its reverse (311132025), we get a palindrome (831363138).

It can be divided in two parts, 5202 and 31113, that added together give a triangular number (36315 = T₂₆₉).

The spelling of 520231113 in words is "five hundred twenty million, two hundred thirty-one thousand, one hundred thirteen".