12333231 has 6 divisors (see below), whose sum is σ = 17814680. Its totient is φ = 8222148.

The previous prime is 12333203. The next prime is 12333239. The reversal of 12333231 is 13233321.

It is not a de Polignac number, because 12333231 - 2⁷ = 12333103 is a prime.

It is a super-2 number, since 2×12333231² = 304217173798722, 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 (12333239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685171 + ... + 685188.

Almost surely, 2^12333231 is an apocalyptic number.

12333231 is a deficient number, since it is larger than the sum of its proper divisors (5481449).

12333231 is a wasteful number, since it uses less digits than its factorization.

12333231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370365 (or 1370362 counting only the distinct ones).

The product of its digits is 324, while the sum is 18.

The square root of 12333231 is about 3511.8700146788. The cubic root of 12333231 is about 231.0427199340.

Adding to 12333231 its reverse (13233321), we get a palindrome (25566552).

The spelling of 12333231 in words is "twelve million, three hundred thirty-three thousand, two hundred thirty-one".