520344131 has 2 divisors, whose sum is σ = 520344132. Its totient is φ = 520344130.

The previous prime is 520344113. The next prime is 520344133. The reversal of 520344131 is 131443025.

Together with previous prime (520344113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520344131 - 2⁶ = 520344067 is a prime.

It is a super-2 number, since 2×520344131² = 541516029332290322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 520344133, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 520344097 and 520344106.

It is not a weakly prime, because it can be changed into another prime (520344133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260172065 + 260172066.

It is an arithmetic number, because the mean of its divisors is an integer number (260172066).

Almost surely, 2^520344131 is an apocalyptic number.

520344131 is a deficient number, since it is larger than the sum of its proper divisors (1).

520344131 is an equidigital number, since it uses as much as digits as its factorization.

520344131 is an evil number, because the sum of its binary digits is even.

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

The square root of 520344131 is about 22811.0528253301. The cubic root of 520344131 is about 804.3225044432.

Adding to 520344131 its reverse (131443025), we get a palindrome (651787156).

It can be divided in two parts, 52034 and 4131, that added together give a palindrome (56165).

The spelling of 520344131 in words is "five hundred twenty million, three hundred forty-four thousand, one hundred thirty-one".