520343713 has 2 divisors, whose sum is σ = 520343714. Its totient is φ = 520343712.

The previous prime is 520343699. The next prime is 520343729. The reversal of 520343713 is 317343025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 291487329 + 228856384 = 17073^2 + 15128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520343713 is a prime.

It is not a weakly prime, because it can be changed into another prime (520343413) 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 as a sum of consecutive naturals, namely, 260171856 + 260171857.

It is an arithmetic number, because the mean of its divisors is an integer number (260171857).

Almost surely, 2^520343713 is an apocalyptic number.

It is an amenable number.

520343713 is a deficient number, since it is larger than the sum of its proper divisors (1).

520343713 is an equidigital number, since it uses as much as digits as its factorization.

520343713 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 520343713 is about 22811.0436631032. The cubic root of 520343713 is about 804.3222890685.

Adding to 520343713 its reverse (317343025), we get a palindrome (837686738).

The spelling of 520343713 in words is "five hundred twenty million, three hundred forty-three thousand, seven hundred thirteen".