210233009 has 4 divisors (see below), whose sum is σ = 240266304. Its totient is φ = 180199716.

The previous prime is 210233003. The next prime is 210233011. The reversal of 210233009 is 900332012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210233009 - 2⁴ = 210232993 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (210233003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15016637 + ... + 15016650.

It is an arithmetic number, because the mean of its divisors is an integer number (60066576).

Almost surely, 2^210233009 is an apocalyptic number.

It is an amenable number.

210233009 is a deficient number, since it is larger than the sum of its proper divisors (30033295).

210233009 is an equidigital number, since it uses as much as digits as its factorization.

210233009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30033294.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 210233009 is about 14499.4140916107. The cubic root of 210233009 is about 594.6119532732.

The spelling of 210233009 in words is "two hundred ten million, two hundred thirty-three thousand, nine".