12369281 has 2 divisors, whose sum is σ = 12369282. Its totient is φ = 12369280.

The previous prime is 12369277. The next prime is 12369317. The reversal of 12369281 is 18296321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7789681 + 4579600 = 2791^2 + 2140^2 .

It is a cyclic number.

It is not a de Polignac number, because 12369281 - 2² = 12369277 is a prime.

It is a super-2 number, since 2×12369281² = 305998224913922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12369221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6184640 + 6184641.

It is an arithmetic number, because the mean of its divisors is an integer number (6184641).

Almost surely, 2^12369281 is an apocalyptic number.

It is an amenable number.

12369281 is a deficient number, since it is larger than the sum of its proper divisors (1).

12369281 is an equidigital number, since it uses as much as digits as its factorization.

12369281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 32.

The square root of 12369281 is about 3516.9988626669. The cubic root of 12369281 is about 231.2676133650.

The spelling of 12369281 in words is "twelve million, three hundred sixty-nine thousand, two hundred eighty-one".