210816013 has 2 divisors, whose sum is σ = 210816014. Its totient is φ = 210816012.

The previous prime is 210815981. The next prime is 210816019. The reversal of 210816013 is 310618012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197177764 + 13638249 = 14042^2 + 3693^2 .

It is a cyclic number.

It is not a de Polignac number, because 210816013 - 2⁵ = 210815981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210816019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105408006 + 105408007.

It is an arithmetic number, because the mean of its divisors is an integer number (105408007).

Almost surely, 2^210816013 is an apocalyptic number.

It is an amenable number.

210816013 is a deficient number, since it is larger than the sum of its proper divisors (1).

210816013 is an equidigital number, since it uses as much as digits as its factorization.

210816013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 210816013 is about 14519.5045714377. The cubic root of 210816013 is about 595.1610918946.

The spelling of 210816013 in words is "two hundred ten million, eight hundred sixteen thousand, thirteen".