22327231 has 2 divisors, whose sum is σ = 22327232. Its totient is φ = 22327230.

The previous prime is 22327219. The next prime is 22327259. The reversal of 22327231 is 13272322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22327231 - 2⁵ = 22327199 is a prime.

It is a super-3 number, since 3×22327231³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22327631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11163615 + 11163616.

It is an arithmetic number, because the mean of its divisors is an integer number (11163616).

Almost surely, 2^22327231 is an apocalyptic number.

22327231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22327231 is an equidigital number, since it uses as much as digits as its factorization.

22327231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1008, while the sum is 22.

The square root of 22327231 is about 4725.1699440338. The cubic root of 22327231 is about 281.5863652293.

Adding to 22327231 its reverse (13272322), we get a palindrome (35599553).

The spelling of 22327231 in words is "twenty-two million, three hundred twenty-seven thousand, two hundred thirty-one".