216875213 has 2 divisors, whose sum is σ = 216875214. Its totient is φ = 216875212.

The previous prime is 216875159. The next prime is 216875227. The reversal of 216875213 is 312578612.

It is a happy number.

216875213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212372329 + 4502884 = 14573^2 + 2122^2 .

It is a cyclic number.

It is not a de Polignac number, because 216875213 - 2⁶ = 216875149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216875293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108437606 + 108437607.

It is an arithmetic number, because the mean of its divisors is an integer number (108437607).

Almost surely, 2^216875213 is an apocalyptic number.

It is an amenable number.

216875213 is a deficient number, since it is larger than the sum of its proper divisors (1).

216875213 is an equidigital number, since it uses as much as digits as its factorization.

216875213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 35.

The square root of 216875213 is about 14726.6837067956. The cubic root of 216875213 is about 600.8092903319.

The spelling of 216875213 in words is "two hundred sixteen million, eight hundred seventy-five thousand, two hundred thirteen".