230209 has 4 divisors (see below), whose sum is σ = 263104. Its totient is φ = 197316.

The previous prime is 230203. The next prime is 230213. The reversal of 230209 is 902032.

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 not a de Polignac number, because 230209 - 2⁷ = 230081 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 230192 and 230201.

It is not an unprimeable number, because it can be changed into a prime (230203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16437 + ... + 16450.

It is an arithmetic number, because the mean of its divisors is an integer number (65776).

2²³⁰²⁰⁹ is an apocalyptic number.

It is an amenable number.

230209 is a deficient number, since it is larger than the sum of its proper divisors (32895).

230209 is an equidigital number, since it uses as much as digits as its factorization.

230209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32894.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 230209 is about 479.8010004158. The cubic root of 230209 is about 61.2878095029.

The spelling of 230209 in words is "two hundred thirty thousand, two hundred nine".