12871397 has 16 divisors (see below), whose sum is σ = 16993152. Its totient is φ = 9438720.

The previous prime is 12871387. The next prime is 12871399. The reversal of 12871397 is 79317821.

12871397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12871397 - 2⁶ = 12871333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12871397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12871399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3608 + ... + 6225.

It is an arithmetic number, because the mean of its divisors is an integer number (1062072).

Almost surely, 2^12871397 is an apocalyptic number.

12871397 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12871397 is a deficient number, since it is larger than the sum of its proper divisors (4121755).

12871397 is a wasteful number, since it uses less digits than its factorization.

12871397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9868.

The product of its digits is 21168, while the sum is 38.

The square root of 12871397 is about 3587.6729226617. The cubic root of 12871397 is about 234.3555422543.

The spelling of 12871397 in words is "twelve million, eight hundred seventy-one thousand, three hundred ninety-seven".