520534631 has 2 divisors, whose sum is σ = 520534632. Its totient is φ = 520534630.

The previous prime is 520534627. The next prime is 520534667. The reversal of 520534631 is 136435025.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 520534631 - 2² = 520534627 is a prime.

It is a super-2 number, since 2×520534631² = 541912604140612322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 520534594 and 520534603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520534031) 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 as a sum of consecutive naturals, namely, 260267315 + 260267316.

It is an arithmetic number, because the mean of its divisors is an integer number (260267316).

Almost surely, 2^520534631 is an apocalyptic number.

520534631 is a deficient number, since it is larger than the sum of its proper divisors (1).

520534631 is an equidigital number, since it uses as much as digits as its factorization.

520534631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 520534631 is about 22815.2280505806. The cubic root of 520534631 is about 804.4206476611.

Adding to 520534631 its reverse (136435025), we get a palindrome (656969656).

The spelling of 520534631 in words is "five hundred twenty million, five hundred thirty-four thousand, six hundred thirty-one".