22735231 has 2 divisors, whose sum is σ = 22735232. Its totient is φ = 22735230.

The previous prime is 22735199. The next prime is 22735241. The reversal of 22735231 is 13253722.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22735231 - 2⁵ = 22735199 is a prime.

It is a super-2 number, since 2×22735231² = 1033781457246722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22735196 and 22735205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22735241) 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, 11367615 + 11367616.

It is an arithmetic number, because the mean of its divisors is an integer number (11367616).

Almost surely, 2^22735231 is an apocalyptic number.

22735231 is a deficient number, since it is larger than the sum of its proper divisors (1).

22735231 is an equidigital number, since it uses as much as digits as its factorization.

22735231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2520, while the sum is 25.

The square root of 22735231 is about 4768.1475438581. The cubic root of 22735231 is about 283.2912258840.

Adding to 22735231 its reverse (13253722), we get a palindrome (35988953).

The spelling of 22735231 in words is "twenty-two million, seven hundred thirty-five thousand, two hundred thirty-one".