11671271 has 4 divisors (see below), whose sum is σ = 11681544. Its totient is φ = 11661000.

The previous prime is 11671267. The next prime is 11671273. The reversal of 11671271 is 17217611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 17217611 = 643 ⋅26777.

It is a cyclic number.

It is not a de Polignac number, because 11671271 - 2² = 11671267 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11671271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11671273) 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 3 ways as a sum of consecutive naturals, for example, 3185 + ... + 5786.

It is an arithmetic number, because the mean of its divisors is an integer number (2920386).

Almost surely, 2^11671271 is an apocalyptic number.

11671271 is a deficient number, since it is larger than the sum of its proper divisors (10273).

11671271 is an equidigital number, since it uses as much as digits as its factorization.

11671271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10272.

The product of its digits is 588, while the sum is 26.

The square root of 11671271 is about 3416.3241942181. The cubic root of 11671271 is about 226.8329030915.

Adding to 11671271 its reverse (17217611), we get a palindrome (28888882).

The spelling of 11671271 in words is "eleven million, six hundred seventy-one thousand, two hundred seventy-one".