23154223 has 4 divisors (see below), whose sum is σ = 23186800. Its totient is φ = 23121648.

The previous prime is 23154199. The next prime is 23154239. The reversal of 23154223 is 32245132.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23154223 is a prime.

It is a super-2 number, since 2×23154223² = 1072236085467458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23154194 and 23154203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23154283) 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, 15198 + ... + 16651.

It is an arithmetic number, because the mean of its divisors is an integer number (5796700).

Almost surely, 2^23154223 is an apocalyptic number.

23154223 is a deficient number, since it is larger than the sum of its proper divisors (32577).

23154223 is an equidigital number, since it uses as much as digits as its factorization.

23154223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32576.

The product of its digits is 1440, while the sum is 22.

The square root of 23154223 is about 4811.8835189560. The cubic root of 23154223 is about 285.0209197735.

Adding to 23154223 its reverse (32245132), we get a palindrome (55399355).

Subtracting 23154223 from its reverse (32245132), we obtain a palindrome (9090909).

The spelling of 23154223 in words is "twenty-three million, one hundred fifty-four thousand, two hundred twenty-three".