123321231 has 32 divisors (see below), whose sum is σ = 200160000. Its totient is φ = 74420640.

The previous prime is 123321223. The next prime is 123321257. The reversal of 123321231 is 132123321.

It is not a de Polignac number, because 123321231 - 2³ = 123321223 is a prime.

It is a super-2 number, since 2×123321231² = 30416252030710722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123321631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81520 + ... + 83018.

It is an arithmetic number, because the mean of its divisors is an integer number (6255000).

Almost surely, 2^123321231 is an apocalyptic number.

123321231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123321231 is a deficient number, since it is larger than the sum of its proper divisors (76838769).

123321231 is a wasteful number, since it uses less digits than its factorization.

123321231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1790 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 123321231 is about 11105.0092750974. The cubic root of 123321231 is about 497.7515453933.

Adding to 123321231 its reverse (132123321), we get a palindrome (255444552).

The spelling of 123321231 in words is "one hundred twenty-three million, three hundred twenty-one thousand, two hundred thirty-one".