23122223 has 4 divisors (see below), whose sum is σ = 23400888. Its totient is φ = 22843560.

The previous prime is 23122219. The next prime is 23122241. The reversal of 23122223 is 32222132.

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 23122223 - 2² = 23122219 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 (23122213) 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, 139208 + ... + 139373.

It is an arithmetic number, because the mean of its divisors is an integer number (5850222).

Almost surely, 2^23122223 is an apocalyptic number.

23122223 is a deficient number, since it is larger than the sum of its proper divisors (278665).

23122223 is an equidigital number, since it uses as much as digits as its factorization.

23122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278664.

The product of its digits is 288, while the sum is 17.

The square root of 23122223 is about 4808.5572680379. The cubic root of 23122223 is about 284.8895560569.

Adding to 23122223 its reverse (32222132), we get a palindrome (55344355).

Subtracting 23122223 from its reverse (32222132), we obtain a palindrome (9099909).

The spelling of 23122223 in words is "twenty-three million, one hundred twenty-two thousand, two hundred twenty-three".