520412311 has 2 divisors, whose sum is σ = 520412312. Its totient is φ = 520412310.

The previous prime is 520412287. The next prime is 520412317. The reversal of 520412311 is 113214025.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 520412311 - 2¹⁹ = 519888023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520412317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260206155 + 260206156.

It is an arithmetic number, because the mean of its divisors is an integer number (260206156).

Almost surely, 2^520412311 is an apocalyptic number.

520412311 is a deficient number, since it is larger than the sum of its proper divisors (1).

520412311 is an equidigital number, since it uses as much as digits as its factorization.

520412311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 520412311 is about 22812.5472273484. The cubic root of 520412311 is about 804.3576326786.

Adding to 520412311 its reverse (113214025), we get a palindrome (633626336).

The spelling of 520412311 in words is "five hundred twenty million, four hundred twelve thousand, three hundred eleven".