520443131 has 8 divisors (see below), whose sum is σ = 560661024. Its totient is φ = 480251520.

The previous prime is 520443113. The next prime is 520443139. The reversal of 520443131 is 131344025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 520443131 - 2¹⁰ = 520442107 is a prime.

It is a super-2 number, since 2×520443131² = 541722105210166322, 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 = 520443097 and 520443106.

It is not an unprimeable number, because it can be changed into a prime (520443139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58466 + ... + 66776.

It is an arithmetic number, because the mean of its divisors is an integer number (70082628).

Almost surely, 2^520443131 is an apocalyptic number.

520443131 is a deficient number, since it is larger than the sum of its proper divisors (40217893).

520443131 is a wasteful number, since it uses less digits than its factorization.

520443131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13141.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 520443131 is about 22813.2227227983. Note that the first 3 decimals coincide. The cubic root of 520443131 is about 804.3735109943.

Adding to 520443131 its reverse (131344025), we get a palindrome (651787156).

The spelling of 520443131 in words is "five hundred twenty million, four hundred forty-three thousand, one hundred thirty-one".