12781183 has 2 divisors, whose sum is σ = 12781184. Its totient is φ = 12781182.

The previous prime is 12781159. The next prime is 12781187. The reversal of 12781183 is 38118721.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (38118721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12781183 - 2¹⁷ = 12650111 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12781187) 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, 6390591 + 6390592.

It is an arithmetic number, because the mean of its divisors is an integer number (6390592).

Almost surely, 2^12781183 is an apocalyptic number.

12781183 is a deficient number, since it is larger than the sum of its proper divisors (1).

12781183 is an equidigital number, since it uses as much as digits as its factorization.

12781183 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 31.

The square root of 12781183 is about 3575.0780411062. The cubic root of 12781183 is about 233.8067352536.

The spelling of 12781183 in words is "twelve million, seven hundred eighty-one thousand, one hundred eighty-three".