210230209 has 16 divisors (see below), whose sum is σ = 242985600. Its totient is φ = 178168320.

The previous prime is 210230161. The next prime is 210230227. The reversal of 210230209 is 902032012.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 210230209 - 2⁷ = 210230081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210230249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 367894 + ... + 368464.

It is an arithmetic number, because the mean of its divisors is an integer number (15186600).

Almost surely, 2^210230209 is an apocalyptic number.

It is an amenable number.

210230209 is a deficient number, since it is larger than the sum of its proper divisors (32755391).

210230209 is a wasteful number, since it uses less digits than its factorization.

210230209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 210230209 is about 14499.3175356635. The cubic root of 210230209 is about 594.6093134707.

The spelling of 210230209 in words is "two hundred ten million, two hundred thirty thousand, two hundred nine".