12023231 has 8 divisors (see below), whose sum is σ = 13170384. Its totient is φ = 10885120.

The previous prime is 12023191. The next prime is 12023239. The reversal of 12023231 is 13232021.

It is a happy number.

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-12023231 is a prime.

It is a super-2 number, since 2×12023231² = 289116167358722, 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 (12023239) 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, 701 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (1646298).

Almost surely, 2^12023231 is an apocalyptic number.

12023231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12023231 is a deficient number, since it is larger than the sum of its proper divisors (1147153).

12023231 is a wasteful number, since it uses less digits than its factorization.

12023231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4521.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 12023231 is about 3467.4530998991. The cubic root of 12023231 is about 229.0904913689.

Adding to 12023231 its reverse (13232021), we get a palindrome (25255252).

The spelling of 12023231 in words is "twelve million, twenty-three thousand, two hundred thirty-one".