123322231 has 2 divisors, whose sum is σ = 123322232. Its totient is φ = 123322230.

The previous prime is 123322187. The next prime is 123322249. The reversal of 123322231 is 132223321.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123322231 is a prime.

It is a super-2 number, since 2×123322231² = 30416745317634722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123322199 and 123322208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123322831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61661115 + 61661116.

It is an arithmetic number, because the mean of its divisors is an integer number (61661116).

Almost surely, 2^123322231 is an apocalyptic number.

123322231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123322231 is an equidigital number, since it uses as much as digits as its factorization.

123322231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 19.

The square root of 123322231 is about 11105.0542997322. The cubic root of 123322231 is about 497.7528907962.

Adding to 123322231 its reverse (132223321), we get a palindrome (255545552).

The spelling of 123322231 in words is "one hundred twenty-three million, three hundred twenty-two thousand, two hundred thirty-one".