123231222 has 24 divisors (see below), whose sum is σ = 267344064. Its totient is φ = 41024304.

The previous prime is 123231209. The next prime is 123231223. The reversal of 123231222 is 222132321.

It is a super-2 number, since 2×123231222² = 30371868151226568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 123231195 and 123231204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123231223) 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 in 11 ways as a sum of consecutive naturals, for example, 11568 + ... + 19500.

It is an arithmetic number, because the mean of its divisors is an integer number (11139336).

Almost surely, 2^123231222 is an apocalyptic number.

123231222 is an abundant number, since it is smaller than the sum of its proper divisors (144112842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123231222 is a wasteful number, since it uses less digits than its factorization.

123231222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8804 (or 8801 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 123231222 is about 11100.9559047859. The cubic root of 123231222 is about 497.6304172283.

Adding to 123231222 its reverse (222132321), we get a palindrome (345363543).

The spelling of 123231222 in words is "one hundred twenty-three million, two hundred thirty-one thousand, two hundred twenty-two".