12271231 has 8 divisors (see below), whose sum is σ = 14182560. Its totient is φ = 10399488.

The previous prime is 12271219. The next prime is 12271247. The reversal of 12271231 is 13217221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12271231 - 2⁵ = 12271199 is a prime.

It is a super-2 number, since 2×12271231² = 301166220510722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12271199 and 12271208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12271201) 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, 9226 + ... + 10471.

It is an arithmetic number, because the mean of its divisors is an integer number (1772820).

Almost surely, 2^12271231 is an apocalyptic number.

12271231 is a deficient number, since it is larger than the sum of its proper divisors (1911329).

12271231 is an equidigital number, since it uses as much as digits as its factorization.

12271231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19793.

The product of its digits is 168, while the sum is 19.

The square root of 12271231 is about 3503.0316869820. The cubic root of 12271231 is about 230.6549134849.

Adding to 12271231 its reverse (13217221), we get a palindrome (25488452).

The spelling of 12271231 in words is "twelve million, two hundred seventy-one thousand, two hundred thirty-one".