23132209 has 2 divisors, whose sum is σ = 23132210. Its totient is φ = 23132208.

The previous prime is 23132203. The next prime is 23132233. The reversal of 23132209 is 90223132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21594609 + 1537600 = 4647^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 23132209 - 2¹⁷ = 23001137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23132209.

It is not a weakly prime, because it can be changed into another prime (23132203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11566104 + 11566105.

It is an arithmetic number, because the mean of its divisors is an integer number (11566105).

Almost surely, 2^23132209 is an apocalyptic number.

It is an amenable number.

23132209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23132209 is an equidigital number, since it uses as much as digits as its factorization.

23132209 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23132209 is about 4809.5955131383. The cubic root of 23132209 is about 284.9305627493.

The spelling of 23132209 in words is "twenty-three million, one hundred thirty-two thousand, two hundred nine".