23105689 has 4 divisors (see below), whose sum is σ = 23172624. Its totient is φ = 23038756.

The previous prime is 23105659. The next prime is 23105701. The reversal of 23105689 is 98650132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23105689 - 2⁵ = 23105657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32947 + ... + 33640.

It is an arithmetic number, because the mean of its divisors is an integer number (5793156).

Almost surely, 2^23105689 is an apocalyptic number.

It is an amenable number.

23105689 is a deficient number, since it is larger than the sum of its proper divisors (66935).

23105689 is an equidigital number, since it uses as much as digits as its factorization.

23105689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66934.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 23105689 is about 4806.8377338953. The cubic root of 23105689 is about 284.8216345727.

The spelling of 23105689 in words is "twenty-three million, one hundred five thousand, six hundred eighty-nine".