23006209 has 6 divisors (see below), whose sum is σ = 23182530. Its totient is φ = 22831200.

The previous prime is 23006197. The next prime is 23006227. The reversal of 23006209 is 90260032.

It can be written as a sum of positive squares in only one way, i.e., 17875984 + 5130225 = 4228^2 + 2265^2 .

It is not a de Polignac number, because 23006209 - 2¹¹ = 23004161 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23006209.

It is not an unprimeable number, because it can be changed into a prime (23006239) 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, 22297 + ... + 23305.

It is an arithmetic number, because the mean of its divisors is an integer number (3863755).

Almost surely, 2^23006209 is an apocalyptic number.

It is an amenable number.

23006209 is a deficient number, since it is larger than the sum of its proper divisors (176321).

23006209 is an equidigital number, since it uses as much as digits as its factorization.

23006209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1311 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 23006209 is about 4796.4788126291. The cubic root of 23006209 is about 284.4122863640.

The spelling of 23006209 in words is "twenty-three million, six thousand, two hundred nine".