23075209 has 2 divisors, whose sum is σ = 23075210. Its totient is φ = 23075208.

The previous prime is 23075207. The next prime is 23075243. The reversal of 23075209 is 90257032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23068809 + 6400 = 4803^2 + 80^2 .

It is a cyclic number.

It is not a de Polignac number, because 23075209 - 2¹ = 23075207 is a prime.

Together with 23075207, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (23075207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11537604 + 11537605.

It is an arithmetic number, because the mean of its divisors is an integer number (11537605).

Almost surely, 2^23075209 is an apocalyptic number.

It is an amenable number.

23075209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23075209 is an equidigital number, since it uses as much as digits as its factorization.

23075209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 23075209 is about 4803.6662040571. Note that the first 3 decimals coincide. The cubic root of 23075209 is about 284.6963381060.

The spelling of 23075209 in words is "twenty-three million, seventy-five thousand, two hundred nine".