12003231 has 16 divisors (see below), whose sum is σ = 17392640. Its totient is φ = 7335360.

The previous prime is 12003227. The next prime is 12003239. The reversal of 12003231 is 13230021.

It is a happy number.

It is not a de Polignac number, because 12003231 - 2² = 12003227 is a prime.

It is a super-2 number, since 2×12003231² = 288155108878722, 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 (12003239) 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, 1630 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (1087040).

Almost surely, 2^12003231 is an apocalyptic number.

12003231 is a deficient number, since it is larger than the sum of its proper divisors (5389409).

12003231 is a wasteful number, since it uses less digits than its factorization.

12003231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6846.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 12003231 is about 3464.5679384304. The cubic root of 12003231 is about 228.9633942874.

Adding to 12003231 its reverse (13230021), we get a palindrome (25233252).

The spelling of 12003231 in words is "twelve million, three thousand, two hundred thirty-one".