12366631 has 2 divisors, whose sum is σ = 12366632. Its totient is φ = 12366630.

The previous prime is 12366623. The next prime is 12366637. The reversal of 12366631 is 13666321.

It is a strong prime.

It is an emirp because it is prime and its reverse (13666321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12366631 - 2³ = 12366623 is a prime.

It is a super-2 number, since 2×12366631² = 305867124580322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12366631.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12366637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6183315 + 6183316.

It is an arithmetic number, because the mean of its divisors is an integer number (6183316).

Almost surely, 2^12366631 is an apocalyptic number.

12366631 is a deficient number, since it is larger than the sum of its proper divisors (1).

12366631 is an equidigital number, since it uses as much as digits as its factorization.

12366631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

The square root of 12366631 is about 3516.6221008235. The cubic root of 12366631 is about 231.2510965616.

It can be divided in two parts, 1 and 2366631, that added together give a palindrome (2366632).

The spelling of 12366631 in words is "twelve million, three hundred sixty-six thousand, six hundred thirty-one".