12231671 has 2 divisors, whose sum is σ = 12231672. Its totient is φ = 12231670.

The previous prime is 12231647. The next prime is 12231679. The reversal of 12231671 is 17613221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231671 is a prime.

It is a super-2 number, since 2×12231671² = 299227550904482, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12231679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115835 + 6115836.

It is an arithmetic number, because the mean of its divisors is an integer number (6115836).

Almost surely, 2^12231671 is an apocalyptic number.

12231671 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231671 is an equidigital number, since it uses as much as digits as its factorization.

12231671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 12231671 is about 3497.3805912425. The cubic root of 12231671 is about 230.4067848499.

Adding to 12231671 its reverse (17613221), we get a palindrome (29844892).

The spelling of 12231671 in words is "twelve million, two hundred thirty-one thousand, six hundred seventy-one".