520313111 has 2 divisors, whose sum is σ = 520313112. Its totient is φ = 520313110.

The previous prime is 520313071. The next prime is 520313147. The reversal of 520313111 is 111313025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520313111 - 2¹⁸ = 520050967 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 520313111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520313011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260156555 + 260156556.

It is an arithmetic number, because the mean of its divisors is an integer number (260156556).

Almost surely, 2^520313111 is an apocalyptic number.

520313111 is a deficient number, since it is larger than the sum of its proper divisors (1).

520313111 is an equidigital number, since it uses as much as digits as its factorization.

520313111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 520313111 is about 22810.3728816519. The cubic root of 520313111 is about 804.3065210594.

Adding to 520313111 its reverse (111313025), we get a palindrome (631626136).

The spelling of 520313111 in words is "five hundred twenty million, three hundred thirteen thousand, one hundred eleven".