12881371 has 2 divisors, whose sum is σ = 12881372. Its totient is φ = 12881370.

The previous prime is 12881369. The next prime is 12881387. The reversal of 12881371 is 17318821.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12881371 - 2¹ = 12881369 is a prime.

Together with 12881369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12881171) 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, 6440685 + 6440686.

It is an arithmetic number, because the mean of its divisors is an integer number (6440686).

Almost surely, 2^12881371 is an apocalyptic number.

12881371 is a deficient number, since it is larger than the sum of its proper divisors (1).

12881371 is an equidigital number, since it uses as much as digits as its factorization.

12881371 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 12881371 is about 3589.0626910100. The cubic root of 12881371 is about 234.4160603854.

The spelling of 12881371 in words is "twelve million, eight hundred eighty-one thousand, three hundred seventy-one".