23223181 has 2 divisors, whose sum is σ = 23223182. Its totient is φ = 23223180.

The previous prime is 23223157. The next prime is 23223203. The reversal of 23223181 is 18132232.

It is an a-pointer prime, because the next prime (23223203) can be obtained adding 23223181 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13205956 + 10017225 = 3634^2 + 3165^2 .

It is a cyclic number.

It is not a de Polignac number, because 23223181 - 2¹⁵ = 23190413 is a prime.

It is a super-2 number, since 2×23223181² = 1078632271517522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23923181) 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 as a sum of consecutive naturals, namely, 11611590 + 11611591.

It is an arithmetic number, because the mean of its divisors is an integer number (11611591).

Almost surely, 2^23223181 is an apocalyptic number.

It is an amenable number.

23223181 is a deficient number, since it is larger than the sum of its proper divisors (1).

23223181 is an equidigital number, since it uses as much as digits as its factorization.

23223181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 23223181 is about 4819.0435773087. The cubic root of 23223181 is about 285.3035894925.

The spelling of 23223181 in words is "twenty-three million, two hundred twenty-three thousand, one hundred eighty-one".