23423143 has 4 divisors (see below), whose sum is σ = 24655960. Its totient is φ = 22190328.

The previous prime is 23423137. The next prime is 23423159. The reversal of 23423143 is 34132432.

It is a happy number.

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

It is not a de Polignac number, because 23423143 - 2⁵ = 23423111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 616380 + ... + 616417.

It is an arithmetic number, because the mean of its divisors is an integer number (6163990).

Almost surely, 2^23423143 is an apocalyptic number.

23423143 is a deficient number, since it is larger than the sum of its proper divisors (1232817).

23423143 is a wasteful number, since it uses less digits than its factorization.

23423143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232816.

The product of its digits is 1728, while the sum is 22.

The square root of 23423143 is about 4839.7461710300. The cubic root of 23423143 is about 286.1201143475.

Adding to 23423143 its reverse (34132432), we get a palindrome (57555575).

The spelling of 23423143 in words is "twenty-three million, four hundred twenty-three thousand, one hundred forty-three".