23144909 has 2 divisors, whose sum is σ = 23144910. Its totient is φ = 23144908.

The previous prime is 23144903. The next prime is 23144911. The reversal of 23144909 is 90944132.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15288100 + 7856809 = 3910^2 + 2803^2 .

It is a cyclic number.

It is not a de Polignac number, because 23144909 - 2⁴ = 23144893 is a prime.

Together with 23144911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23144903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572454 + 11572455.

It is an arithmetic number, because the mean of its divisors is an integer number (11572455).

Almost surely, 2^23144909 is an apocalyptic number.

It is an amenable number.

23144909 is a deficient number, since it is larger than the sum of its proper divisors (1).

23144909 is an equidigital number, since it uses as much as digits as its factorization.

23144909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 23144909 is about 4810.9156093201. The cubic root of 23144909 is about 284.9826972157.

The spelling of 23144909 in words is "twenty-three million, one hundred forty-four thousand, nine hundred nine".