520013213 has 2 divisors, whose sum is σ = 520013214. Its totient is φ = 520013212.

The previous prime is 520013201. The next prime is 520013257. The reversal of 520013213 is 312310025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 500103769 + 19909444 = 22363^2 + 4462^2 .

It is a cyclic number.

It is not a de Polignac number, because 520013213 - 2¹² = 520009117 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 520013191 and 520013200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (520013513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260006606 + 260006607.

It is an arithmetic number, because the mean of its divisors is an integer number (260006607).

Almost surely, 2^520013213 is an apocalyptic number.

It is an amenable number.

520013213 is a deficient number, since it is larger than the sum of its proper divisors (1).

520013213 is an equidigital number, since it uses as much as digits as its factorization.

520013213 is an evil number, because the sum of its binary digits is even.

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

The square root of 520013213 is about 22803.7982143326. The cubic root of 520013213 is about 804.1519626665.

Adding to 520013213 its reverse (312310025), we get a palindrome (832323238).

The spelling of 520013213 in words is "five hundred twenty million, thirteen thousand, two hundred thirteen".