12871771 has 12 divisors (see below), whose sum is σ = 14920200. Its totient is φ = 11010560.

The previous prime is 12871763. The next prime is 12871777. The reversal of 12871771 is 17717821.

It is not a de Polignac number, because 12871771 - 2³ = 12871763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12871777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1155 + ... + 5203.

It is an arithmetic number, because the mean of its divisors is an integer number (1243350).

Almost surely, 2^12871771 is an apocalyptic number.

12871771 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12871771 is a deficient number, since it is larger than the sum of its proper divisors (2048429).

12871771 is a wasteful number, since it uses less digits than its factorization.

12871771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4094 (or 4077 counting only the distinct ones).

The product of its digits is 5488, while the sum is 34.

The square root of 12871771 is about 3587.7250452062. The cubic root of 12871771 is about 234.3578120966.

The spelling of 12871771 in words is "twelve million, eight hundred seventy-one thousand, seven hundred seventy-one".