12881281 has 4 divisors (see below), whose sum is σ = 14721472. Its totient is φ = 11041092.

The previous prime is 12881273. The next prime is 12881299. The reversal of 12881281 is 18218821.

It is a happy number.

12881281 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12881281 - 2³ = 12881273 is a prime.

It is a super-3 number, since 3×12881281³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12881251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 920085 + ... + 920098.

It is an arithmetic number, because the mean of its divisors is an integer number (3680368).

Almost surely, 2^12881281 is an apocalyptic number.

It is an amenable number.

12881281 is a deficient number, since it is larger than the sum of its proper divisors (1840191).

12881281 is an equidigital number, since it uses as much as digits as its factorization.

12881281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1840190.

The product of its digits is 2048, while the sum is 31.

The square root of 12881281 is about 3589.0501528956. The cubic root of 12881281 is about 234.4155144421.

The spelling of 12881281 in words is "twelve million, eight hundred eighty-one thousand, two hundred eighty-one".