123233231 has 8 divisors (see below), whose sum is σ = 135768528. Its totient is φ = 110920000.

The previous prime is 123233207. The next prime is 123233239. The reversal of 123233231 is 132332321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123233231 is a prime.

It is a super-2 number, since 2×123233231² = 30372858445398722, 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 (123233239) 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, 54350 + ... + 56571.

It is an arithmetic number, because the mean of its divisors is an integer number (16971066).

Almost surely, 2^123233231 is an apocalyptic number.

123233231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

123233231 is a deficient number, since it is larger than the sum of its proper divisors (12535297).

123233231 is a wasteful number, since it uses less digits than its factorization.

123233231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111033.

The product of its digits is 648, while the sum is 20.

The square root of 123233231 is about 11101.0463921200. The cubic root of 123233231 is about 497.6331214512.

Adding to 123233231 its reverse (132332321), we get a palindrome (255565552).

It can be divided in two parts, 1 and 23233231, that added together give a palindrome (23233232).

The spelling of 123233231 in words is "one hundred twenty-three million, two hundred thirty-three thousand, two hundred thirty-one".