23144431 has 4 divisors (see below), whose sum is σ = 23461552. Its totient is φ = 22827312.

The previous prime is 23144419. The next prime is 23144441. The reversal of 23144431 is 13444132.

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 23144431 - 2⁵ = 23144399 is a prime.

It is a super-2 number, since 2×23144431² = 1071329372627522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23144441) 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, 158451 + ... + 158596.

It is an arithmetic number, because the mean of its divisors is an integer number (5865388).

Almost surely, 2^23144431 is an apocalyptic number.

23144431 is a deficient number, since it is larger than the sum of its proper divisors (317121).

23144431 is an equidigital number, since it uses as much as digits as its factorization.

23144431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317120.

The product of its digits is 1152, while the sum is 22.

The square root of 23144431 is about 4810.8659303705. The cubic root of 23144431 is about 284.9807353347.

Adding to 23144431 its reverse (13444132), we get a palindrome (36588563).

The spelling of 23144431 in words is "twenty-three million, one hundred forty-four thousand, four hundred thirty-one".