23211689 has 4 divisors (see below), whose sum is σ = 23354256. Its totient is φ = 23069124.

The previous prime is 23211679. The next prime is 23211703. The reversal of 23211689 is 98611232.

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 a de Polignac number, because none of the positive numbers 2^k-23211689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23211619) 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, 71039 + ... + 71364.

It is an arithmetic number, because the mean of its divisors is an integer number (5838564).

Almost surely, 2^23211689 is an apocalyptic number.

It is an amenable number.

23211689 is a deficient number, since it is larger than the sum of its proper divisors (142567).

23211689 is a wasteful number, since it uses less digits than its factorization.

23211689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142566.

The product of its digits is 5184, while the sum is 32.

The square root of 23211689 is about 4817.8510769844. The cubic root of 23211689 is about 285.2565208642.

The spelling of 23211689 in words is "twenty-three million, two hundred eleven thousand, six hundred eighty-nine".