213110869 has 2 divisors, whose sum is σ = 213110870. Its totient is φ = 213110868.

The previous prime is 213110867. The next prime is 213110903. The reversal of 213110869 is 968011312.

213110869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204776100 + 8334769 = 14310^2 + 2887^2 .

It is a cyclic number.

It is not a de Polignac number, because 213110869 - 2¹ = 213110867 is a prime.

It is a super-2 number, since 2×213110869² = 90832484971870322, which contains 22 as substring.

Together with 213110867, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 213110869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213110867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555434 + 106555435.

It is an arithmetic number, because the mean of its divisors is an integer number (106555435).

Almost surely, 2^213110869 is an apocalyptic number.

It is an amenable number.

213110869 is a deficient number, since it is larger than the sum of its proper divisors (1).

213110869 is an equidigital number, since it uses as much as digits as its factorization.

213110869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 213110869 is about 14598.3173345424. The cubic root of 213110869 is about 597.3128621531.

The spelling of 213110869 in words is "two hundred thirteen million, one hundred ten thousand, eight hundred sixty-nine".