503304213 has 4 divisors (see below), whose sum is σ = 671072288. Its totient is φ = 335536140.

The previous prime is 503304209. The next prime is 503304253. The reversal of 503304213 is 312403305.

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 not a de Polignac number, because 503304213 - 2² = 503304209 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 503304213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503304253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83884033 + ... + 83884038.

It is an arithmetic number, because the mean of its divisors is an integer number (167768072).

Almost surely, 2^503304213 is an apocalyptic number.

It is an amenable number.

503304213 is a deficient number, since it is larger than the sum of its proper divisors (167768075).

503304213 is a wasteful number, since it uses less digits than its factorization.

503304213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167768074.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 503304213 is about 22434.4425604917. The cubic root of 503304213 is about 795.4450591336.

Adding to 503304213 its reverse (312403305), we get a palindrome (815707518).

The spelling of 503304213 in words is "five hundred three million, three hundred four thousand, two hundred thirteen".