513402213 has 4 divisors (see below), whose sum is σ = 684536288. Its totient is φ = 342268140.

The previous prime is 513402209. The next prime is 513402217. The reversal of 513402213 is 312204315.

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 an interprime number because it is at equal distance from previous prime (513402209) and next prime (513402217).

It is not a de Polignac number, because 513402213 - 2² = 513402209 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513402213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (513402217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85567033 + ... + 85567038.

It is an arithmetic number, because the mean of its divisors is an integer number (171134072).

Almost surely, 2^513402213 is an apocalyptic number.

It is an amenable number.

513402213 is a deficient number, since it is larger than the sum of its proper divisors (171134075).

513402213 is a wasteful number, since it uses less digits than its factorization.

513402213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171134074.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 513402213 is about 22658.3806349880. The cubic root of 513402213 is about 800.7296535756.

Adding to 513402213 its reverse (312204315), we get a palindrome (825606528).

The spelling of 513402213 in words is "five hundred thirteen million, four hundred two thousand, two hundred thirteen".