520743313 has 2 divisors, whose sum is σ = 520743314. Its totient is φ = 520743312.

The previous prime is 520743187. The next prime is 520743329. The reversal of 520743313 is 313347025.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 333135504 + 187607809 = 18252^2 + 13697^2 .

It is a cyclic number.

It is not a de Polignac number, because 520743313 - 2⁹ = 520742801 is a prime.

It is not a weakly prime, because it can be changed into another prime (520713313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260371656 + 260371657.

It is an arithmetic number, because the mean of its divisors is an integer number (260371657).

Almost surely, 2^520743313 is an apocalyptic number.

It is an amenable number.

520743313 is a deficient number, since it is larger than the sum of its proper divisors (1).

520743313 is an equidigital number, since it uses as much as digits as its factorization.

520743313 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 520743313 is about 22819.8008974662. The cubic root of 520743313 is about 804.5281305399.

The spelling of 520743313 in words is "five hundred twenty million, seven hundred forty-three thousand, three hundred thirteen".