12033231 has 16 divisors (see below), whose sum is σ = 18969600. Its totient is φ = 6638688.

The previous prime is 12033221. The next prime is 12033233. The reversal of 12033231 is 13233021.

It is not a de Polignac number, because 12033231 - 2⁵ = 12033199 is a prime.

It is a super-2 number, since 2×12033231² = 289597296598722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12033231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12033233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9271 + ... + 10488.

It is an arithmetic number, because the mean of its divisors is an integer number (1185600).

Almost surely, 2^12033231 is an apocalyptic number.

12033231 is a deficient number, since it is larger than the sum of its proper divisors (6936369).

12033231 is a wasteful number, since it uses less digits than its factorization.

12033231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19798.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 12033231 is about 3468.8947807623. The cubic root of 12033231 is about 229.1539870597.

Adding to 12033231 its reverse (13233021), we get a palindrome (25266252).

The spelling of 12033231 in words is "twelve million, thirty-three thousand, two hundred thirty-one".