23121659 has 8 divisors (see below), whose sum is σ = 25810752. Its totient is φ = 20530440.

The previous prime is 23121643. The next prime is 23121661. The reversal of 23121659 is 95612132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23121659 - 2⁴ = 23121643 is a prime.

It is a super-2 number, since 2×23121659² = 1069222229824562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23121359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23969 + ... + 24914.

It is an arithmetic number, because the mean of its divisors is an integer number (3226344).

Almost surely, 2^23121659 is an apocalyptic number.

23121659 is a deficient number, since it is larger than the sum of its proper divisors (2689093).

23121659 is a wasteful number, since it uses less digits than its factorization.

23121659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48937.

The product of its digits is 3240, while the sum is 29.

The square root of 23121659 is about 4808.4986222313. The cubic root of 23121659 is about 284.8872396848.

The spelling of 23121659 in words is "twenty-three million, one hundred twenty-one thousand, six hundred fifty-nine".