123343231 has 24 divisors (see below), whose sum is σ = 144018000. Its totient is φ = 104734080.

The previous prime is 123343183. The next prime is 123343247. The reversal of 123343231 is 132343321.

It is a de Polignac number, because none of the positive numbers 2^k-123343231 is a prime.

It is a super-2 number, since 2×123343231² = 30427105267038722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123343531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 353245 + ... + 353593.

It is an arithmetic number, because the mean of its divisors is an integer number (6000750).

Almost surely, 2^123343231 is an apocalyptic number.

123343231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123343231 is a deficient number, since it is larger than the sum of its proper divisors (20674769).

123343231 is a wasteful number, since it uses less digits than its factorization.

123343231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 468 counting only the distinct ones).

The product of its digits is 1296, while the sum is 22.

The square root of 123343231 is about 11105.9997748965. Note that the first 3 decimals coincide. The cubic root of 123343231 is about 497.7811425757.

Adding to 123343231 its reverse (132343321), we get a palindrome (255686552).

The spelling of 123343231 in words is "one hundred twenty-three million, three hundred forty-three thousand, two hundred thirty-one".