23122399 has 4 divisors (see below), whose sum is σ = 23327136. Its totient is φ = 22917664.

The previous prime is 23122391. The next prime is 23122403. The reversal of 23122399 is 99322132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23122399 - 2³ = 23122391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23122399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122391) 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, 102199 + ... + 102424.

It is an arithmetic number, because the mean of its divisors is an integer number (5831784).

Almost surely, 2^23122399 is an apocalyptic number.

23122399 is a deficient number, since it is larger than the sum of its proper divisors (204737).

23122399 is a wasteful number, since it uses less digits than its factorization.

23122399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204736.

The product of its digits is 5832, while the sum is 31.

The square root of 23122399 is about 4808.5755687106. The cubic root of 23122399 is about 284.8902788887.

The spelling of 23122399 in words is "twenty-three million, one hundred twenty-two thousand, three hundred ninety-nine".