23311223 has 4 divisors (see below), whose sum is σ = 25104408. Its totient is φ = 21518040.

The previous prime is 23311219. The next prime is 23311237. The reversal of 23311223 is 32211332.

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 23311223 - 2² = 23311219 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 (23311523) 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, 896573 + ... + 896598.

It is an arithmetic number, because the mean of its divisors is an integer number (6276102).

Almost surely, 2^23311223 is an apocalyptic number.

23311223 is a deficient number, since it is larger than the sum of its proper divisors (1793185).

23311223 is a wasteful number, since it uses less digits than its factorization.

23311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793184.

The product of its digits is 216, while the sum is 17.

The square root of 23311223 is about 4828.1697360387. The cubic root of 23311223 is about 285.6636754285.

Adding to 23311223 its reverse (32211332), we get a palindrome (55522555).

The spelling of 23311223 in words is "twenty-three million, three hundred eleven thousand, two hundred twenty-three".