12366552231 has 24 divisors (see below), whose sum is σ = 20137764080. Its totient is φ = 7494878160.

The previous prime is 12366552227. The next prime is 12366552281. The reversal of 12366552231 is 13225566321.

12366552231 is a `hidden beast` number, since 1 + 23 + 66 + 552 + 23 + 1 = 666.

12366552231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12366552231 - 2² = 12366552227 is a prime.

It is a super-2 number, since 2×12366552231² (a number of 21 digits) 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 (12366552281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1889380 + ... + 1895913.

Almost surely, 2^12366552231 is an apocalyptic number.

12366552231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12366552231 is a deficient number, since it is larger than the sum of its proper divisors (7771211849).

12366552231 is a wasteful number, since it uses less digits than its factorization.

12366552231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3785324 (or 3785307 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The spelling of 12366552231 in words is "twelve billion, three hundred sixty-six million, five hundred fifty-two thousand, two hundred thirty-one".