12231233 has 18 divisors (see below), whose sum is σ = 14665986. Its totient is φ = 10170048.

The previous prime is 12231229. The next prime is 12231253. The reversal of 12231233 is 33213221.

It can be written as a sum of positive squares in only one way, i.e., 6927424 + 5303809 = 2632^2 + 2303^2 .

It is not a de Polignac number, because 12231233 - 2² = 12231229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231203) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 108185 + ... + 108297.

It is an arithmetic number, because the mean of its divisors is an integer number (814777).

Almost surely, 2^12231233 is an apocalyptic number.

It is an amenable number.

12231233 is a deficient number, since it is larger than the sum of its proper divisors (2434753).

12231233 is an equidigital number, since it uses as much as digits as its factorization.

12231233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 167 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 12231233 is about 3497.3179723897. The cubic root of 12231233 is about 230.4040346295.

Adding to 12231233 its reverse (33213221), we get a palindrome (45444454).

The spelling of 12231233 in words is "twelve million, two hundred thirty-one thousand, two hundred thirty-three".