12027231 has 8 divisors (see below), whose sum is σ = 17818160. Its totient is φ = 8018136.

The previous prime is 12027179. The next prime is 12027271. The reversal of 12027231 is 13272021.

It is not a de Polignac number, because 12027231 - 2¹¹ = 12025183 is a prime.

It is a super-2 number, since 2×12027231² = 289308571054722, 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 (12027271) 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, 222700 + ... + 222753.

It is an arithmetic number, because the mean of its divisors is an integer number (2227270).

Almost surely, 2^12027231 is an apocalyptic number.

12027231 is a deficient number, since it is larger than the sum of its proper divisors (5790929).

12027231 is an equidigital number, since it uses as much as digits as its factorization.

12027231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445462 (or 445456 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 18.

The square root of 12027231 is about 3468.0298441622. The cubic root of 12027231 is about 229.1158938685.

Adding to 12027231 its reverse (13272021), we get a palindrome (25299252).

The spelling of 12027231 in words is "twelve million, twenty-seven thousand, two hundred thirty-one".