210813089 has 2 divisors, whose sum is σ = 210813090. Its totient is φ = 210813088.

The previous prime is 210813067. The next prime is 210813131. The reversal of 210813089 is 980318012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174028864 + 36784225 = 13192^2 + 6065^2 .

It is a cyclic number.

It is not a de Polignac number, because 210813089 - 2²⁴ = 194035873 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210813019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105406544 + 105406545.

It is an arithmetic number, because the mean of its divisors is an integer number (105406545).

Almost surely, 2^210813089 is an apocalyptic number.

It is an amenable number.

210813089 is a deficient number, since it is larger than the sum of its proper divisors (1).

210813089 is an equidigital number, since it uses as much as digits as its factorization.

210813089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 210813089 is about 14519.4038789476. The cubic root of 210813089 is about 595.1583402708.

The spelling of 210813089 in words is "two hundred ten million, eight hundred thirteen thousand, eighty-nine".