520434313 has 4 divisors (see below), whose sum is σ = 594782080. Its totient is φ = 446086548.

The previous prime is 520434283. The next prime is 520434323. The reversal of 520434313 is 313434025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520434313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520434323) 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 in 3 ways as a sum of consecutive naturals, for example, 37173873 + ... + 37173886.

It is an arithmetic number, because the mean of its divisors is an integer number (148695520).

Almost surely, 2^520434313 is an apocalyptic number.

It is an amenable number.

520434313 is a deficient number, since it is larger than the sum of its proper divisors (74347767).

520434313 is an equidigital number, since it uses as much as digits as its factorization.

520434313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74347766.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 520434313 is about 22813.0294568696. The cubic root of 520434313 is about 804.3689680671.

Adding to 520434313 its reverse (313434025), we get a palindrome (833868338).

The spelling of 520434313 in words is "five hundred twenty million, four hundred thirty-four thousand, three hundred thirteen".