12881671 has 4 divisors (see below), whose sum is σ = 14052744. Its totient is φ = 11710600.

The previous prime is 12881669. The next prime is 12881689. The reversal of 12881671 is 17618821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17618821 = 11 ⋅1601711.

It is not a de Polignac number, because 12881671 - 2¹ = 12881669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12881171) 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 3 ways as a sum of consecutive naturals, for example, 585520 + ... + 585541.

It is an arithmetic number, because the mean of its divisors is an integer number (3513186).

Almost surely, 2^12881671 is an apocalyptic number.

12881671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12881671 is a deficient number, since it is larger than the sum of its proper divisors (1171073).

12881671 is a wasteful number, since it uses less digits than its factorization.

12881671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1171072.

The product of its digits is 5376, while the sum is 34.

The square root of 12881671 is about 3589.1044844083. The cubic root of 12881671 is about 234.4178801781.

The spelling of 12881671 in words is "twelve million, eight hundred eighty-one thousand, six hundred seventy-one".