23118397 has 2 divisors, whose sum is σ = 23118398. Its totient is φ = 23118396.

The previous prime is 23118371. The next prime is 23118401. The reversal of 23118397 is 79381132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21104836 + 2013561 = 4594^2 + 1419^2 .

It is a cyclic number.

It is not a de Polignac number, because 23118397 - 2¹¹ = 23116349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23110397) 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, 11559198 + 11559199.

It is an arithmetic number, because the mean of its divisors is an integer number (11559199).

Almost surely, 2^23118397 is an apocalyptic number.

It is an amenable number.

23118397 is a deficient number, since it is larger than the sum of its proper divisors (1).

23118397 is an equidigital number, since it uses as much as digits as its factorization.

23118397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 23118397 is about 4808.1594191541. The cubic root of 23118397 is about 284.8738417725.

The spelling of 23118397 in words is "twenty-three million, one hundred eighteen thousand, three hundred ninety-seven".