501011213 has 2 divisors, whose sum is σ = 501011214. Its totient is φ = 501011212.

The previous prime is 501011177. The next prime is 501011219. The reversal of 501011213 is 312110105.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 403929604 + 97081609 = 20098^2 + 9853^2 .

It is a cyclic number.

It is not a de Polignac number, because 501011213 - 2⁶ = 501011149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (501011219) 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 as a sum of consecutive naturals, namely, 250505606 + 250505607.

It is an arithmetic number, because the mean of its divisors is an integer number (250505607).

Almost surely, 2^501011213 is an apocalyptic number.

It is an amenable number.

501011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

501011213 is an equidigital number, since it uses as much as digits as its factorization.

501011213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 501011213 is about 22383.2797641454. The cubic root of 501011213 is about 794.2352325378.

Adding to 501011213 its reverse (312110105), we get a palindrome (813121318).

The spelling of 501011213 in words is "five hundred one million, eleven thousand, two hundred thirteen".