232209 has 6 divisors (see below), whose sum is σ = 335426. Its totient is φ = 154800.

The previous prime is 232207. The next prime is 232217. The reversal of 232209 is 902232.

It can be written as a sum of positive squares in only one way, i.e., 199809 + 32400 = 447^2 + 180^2 .

It is not a de Polignac number, because 232209 - 2¹ = 232207 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 232191 and 232200.

It is not an unprimeable number, because it can be changed into a prime (232207) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12892 + ... + 12909.

2²³²²⁰⁹ is an apocalyptic number.

It is an amenable number.

232209 is a deficient number, since it is larger than the sum of its proper divisors (103217).

232209 is a wasteful number, since it uses less digits than its factorization.

232209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25807 (or 25804 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 232209 is about 481.8806906279. The cubic root of 232209 is about 61.4647825337.

It can be divided in two parts, 232 and 209, that added together give a square (441 = 21²).

The spelling of 232209 in words is "two hundred thirty-two thousand, two hundred nine".