123443231 has 8 divisors (see below), whose sum is σ = 129164640. Its totient is φ = 117751392.

The previous prime is 123443213. The next prime is 123443237. The reversal of 123443231 is 132344321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123443231 - 2¹⁴ = 123426847 is a prime.

It is a super-2 number, since 2×123443231² = 30476462559438722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123443197 and 123443206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123443237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1385 + ... + 15773.

It is an arithmetic number, because the mean of its divisors is an integer number (16145580).

Almost surely, 2^123443231 is an apocalyptic number.

123443231 is a deficient number, since it is larger than the sum of its proper divisors (5721409).

123443231 is a wasteful number, since it uses less digits than its factorization.

123443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14785.

The product of its digits is 1728, while the sum is 23.

The square root of 123443231 is about 11110.5009338013. The cubic root of 123443231 is about 497.9156308851.

Adding to 123443231 its reverse (132344321), we get a palindrome (255787552).

The spelling of 123443231 in words is "one hundred twenty-three million, four hundred forty-three thousand, two hundred thirty-one".