23142223 has 4 divisors (see below), whose sum is σ = 24922408. Its totient is φ = 21362040.

The previous prime is 23142211. The next prime is 23142239. The reversal of 23142223 is 32224132.

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 23142223 - 2⁵ = 23142191 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 23142223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23142293) 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, 890073 + ... + 890098.

It is an arithmetic number, because the mean of its divisors is an integer number (6230602).

Almost surely, 2^23142223 is an apocalyptic number.

23142223 is a deficient number, since it is larger than the sum of its proper divisors (1780185).

23142223 is a wasteful number, since it uses less digits than its factorization.

23142223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1780184.

The product of its digits is 576, while the sum is 19.

The square root of 23142223 is about 4810.6364443803. The cubic root of 23142223 is about 284.9716725718.

Adding to 23142223 its reverse (32224132), we get a palindrome (55366355).

The spelling of 23142223 in words is "twenty-three million, one hundred forty-two thousand, two hundred twenty-three".