12911271 has 8 divisors (see below), whose sum is σ = 17318784. Its totient is φ = 8555640.

The previous prime is 12911263. The next prime is 12911281. The reversal of 12911271 is 17211921.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12911271 - 2³ = 12911263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12385 + ... + 13386.

It is an arithmetic number, because the mean of its divisors is an integer number (2164848).

Almost surely, 2^12911271 is an apocalyptic number.

12911271 is a deficient number, since it is larger than the sum of its proper divisors (4407513).

12911271 is a wasteful number, since it uses less digits than its factorization.

12911271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25941.

The product of its digits is 252, while the sum is 24.

The square root of 12911271 is about 3593.2257095819. The cubic root of 12911271 is about 234.5972943059.

The spelling of 12911271 in words is "twelve million, nine hundred eleven thousand, two hundred seventy-one".