23124399 has 4 divisors (see below), whose sum is σ = 30832536. Its totient is φ = 15416264.

The previous prime is 23124359. The next prime is 23124449. The reversal of 23124399 is 99342132.

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 23124399 - 2¹² = 23120303 is a prime.

It is a super-2 number, since 2×23124399² = 1069475658222402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124319) 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, 3854064 + ... + 3854069.

It is an arithmetic number, because the mean of its divisors is an integer number (7708134).

Almost surely, 2^23124399 is an apocalyptic number.

23124399 is a deficient number, since it is larger than the sum of its proper divisors (7708137).

23124399 is an equidigital number, since it uses as much as digits as its factorization.

23124399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7708136.

The product of its digits is 11664, while the sum is 33.

The square root of 23124399 is about 4808.7835260074. The cubic root of 23124399 is about 284.8984926289.

The spelling of 23124399 in words is "twenty-three million, one hundred twenty-four thousand, three hundred ninety-nine".