503213 has 2 divisors, whose sum is σ = 503214. Its totient is φ = 503212.

The previous prime is 503207. The next prime is 503227. The reversal of 503213 is 312305.

It is an a-pointer prime, because the next prime (503227) can be obtained adding 503213 to its sum of digits (14).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 499849 + 3364 = 707^2 + 58^2 .

It is a cyclic number.

It is not a de Polignac number, because 503213 - 2⁴ = 503197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503233) 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, 251606 + 251607.

It is an arithmetic number, because the mean of its divisors is an integer number (251607).

2⁵⁰³²¹³ is an apocalyptic number.

It is an amenable number.

503213 is a deficient number, since it is larger than the sum of its proper divisors (1).

503213 is an equidigital number, since it uses as much as digits as its factorization.

503213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 503213 is about 709.3750770925. The cubic root of 503213 is about 79.5397003828.

Adding to 503213 its reverse (312305), we get a palindrome (815518).

The spelling of 503213 in words is "five hundred three thousand, two hundred thirteen".