12881771 has 32 divisors (see below), whose sum is σ = 16588800. Its totient is φ = 9757440.

The previous prime is 12881741. The next prime is 12881773. The reversal of 12881771 is 17718821.

12881771 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12881771 - 2²² = 8687467 is a prime.

It is a Duffinian number.

12881771 is a modest number, since divided by 1771 gives 1288 as remainder.

It is not an unprimeable number, because it can be changed into a prime (12881773) 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 in 31 ways as a sum of consecutive naturals, for example, 144695 + ... + 144783.

It is an arithmetic number, because the mean of its divisors is an integer number (518400).

Almost surely, 2^12881771 is an apocalyptic number.

12881771 is a deficient number, since it is larger than the sum of its proper divisors (3707029).

12881771 is a wasteful number, since it uses less digits than its factorization.

12881771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its digits is 6272, while the sum is 35.

The square root of 12881771 is about 3589.1184154330. The cubic root of 12881771 is about 234.4184867693.

The spelling of 12881771 in words is "twelve million, eight hundred eighty-one thousand, seven hundred seventy-one".