12881369 has 2 divisors, whose sum is σ = 12881370. Its totient is φ = 12881368.

The previous prime is 12881347. The next prime is 12881371. The reversal of 12881369 is 96318821.

12881369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8094025 + 4787344 = 2845^2 + 2188^2 .

It is a cyclic number.

It is not a de Polignac number, because 12881369 - 2¹⁶ = 12815833 is a prime.

It is a super-2 number, since 2×12881369² = 331859334628322, which contains 22 as substring.

Together with 12881371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12881329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6440684 + 6440685.

It is an arithmetic number, because the mean of its divisors is an integer number (6440685).

Almost surely, 2^12881369 is an apocalyptic number.

It is an amenable number.

12881369 is a deficient number, since it is larger than the sum of its proper divisors (1).

12881369 is an equidigital number, since it uses as much as digits as its factorization.

12881369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 12881369 is about 3589.0624123857. The cubic root of 12881369 is about 234.4160482534.

The spelling of 12881369 in words is "twelve million, eight hundred eighty-one thousand, three hundred sixty-nine".