23508997 has 2 divisors, whose sum is σ = 23508998. Its totient is φ = 23508996.

The previous prime is 23508971. The next prime is 23509007. The reversal of 23508997 is 79980532.

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., 23483716 + 25281 = 4846^2 + 159^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23508997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23508907) 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, 11754498 + 11754499.

It is an arithmetic number, because the mean of its divisors is an integer number (11754499).

Almost surely, 2^23508997 is an apocalyptic number.

It is an amenable number.

23508997 is a deficient number, since it is larger than the sum of its proper divisors (1).

23508997 is an equidigital number, since it uses as much as digits as its factorization.

23508997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 23508997 is about 4848.6077383100. The cubic root of 23508997 is about 286.4692648252.

The spelling of 23508997 in words is "twenty-three million, five hundred eight thousand, nine hundred ninety-seven".