520213013 has 2 divisors, whose sum is σ = 520213014. Its totient is φ = 520213012.

The previous prime is 520213009. The next prime is 520213051. The reversal of 520213013 is 310312025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 324828529 + 195384484 = 18023^2 + 13978^2 .

It is a cyclic number.

It is not a de Polignac number, because 520213013 - 2² = 520213009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 520212982 and 520213000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520213093) 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, 260106506 + 260106507.

It is an arithmetic number, because the mean of its divisors is an integer number (260106507).

Almost surely, 2^520213013 is an apocalyptic number.

It is an amenable number.

520213013 is a deficient number, since it is larger than the sum of its proper divisors (1).

520213013 is an equidigital number, since it uses as much as digits as its factorization.

520213013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 520213013 is about 22808.1786427588. The cubic root of 520213013 is about 804.2549401710.

Adding to 520213013 its reverse (310312025), we get a palindrome (830525038).

The spelling of 520213013 in words is "five hundred twenty million, two hundred thirteen thousand, thirteen".