23222231 has 2 divisors, whose sum is σ = 23222232. Its totient is φ = 23222230.

The previous prime is 23222219. The next prime is 23222233. The reversal of 23222231 is 13222232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23222231 - 2⁶ = 23222167 is a prime.

It is a super-2 number, since 2×23222231² = 1078544025234722, which contains 22 as substring.

Together with 23222233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23222233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11611115 + 11611116.

It is an arithmetic number, because the mean of its divisors is an integer number (11611116).

Almost surely, 2^23222231 is an apocalyptic number.

23222231 is a deficient number, since it is larger than the sum of its proper divisors (1).

23222231 is an equidigital number, since it uses as much as digits as its factorization.

23222231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 23222231 is about 4818.9450090243. The cubic root of 23222231 is about 285.2996990966.

Adding to 23222231 its reverse (13222232), we get a palindrome (36444463).

Subtracting from 23222231 its reverse (13222232), we obtain a palindrome (9999999).

The spelling of 23222231 in words is "twenty-three million, two hundred twenty-two thousand, two hundred thirty-one".