520132231 has 4 divisors (see below), whose sum is σ = 520738600. Its totient is φ = 519525864.

The previous prime is 520132219. The next prime is 520132237. The reversal of 520132231 is 132231025.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 520132231 - 2⁷ = 520132103 is a prime.

It is a super-2 number, since 2×520132231² = 541075075450074722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 520132199 and 520132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520132237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301896 + ... + 303613.

It is an arithmetic number, because the mean of its divisors is an integer number (130184650).

Almost surely, 2^520132231 is an apocalyptic number.

520132231 is a deficient number, since it is larger than the sum of its proper divisors (606369).

520132231 is an equidigital number, since it uses as much as digits as its factorization.

520132231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606368.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 520132231 is about 22806.4076741603. The cubic root of 520132231 is about 804.2133080676.

Adding to 520132231 its reverse (132231025), we get a palindrome (652363256).

The spelling of 520132231 in words is "five hundred twenty million, one hundred thirty-two thousand, two hundred thirty-one".