11965271 has 2 divisors, whose sum is σ = 11965272. Its totient is φ = 11965270.

The previous prime is 11965253. The next prime is 11965279. The reversal of 11965271 is 17256911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11965271 - 2⁶ = 11965207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11965279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5982635 + 5982636.

It is an arithmetic number, because the mean of its divisors is an integer number (5982636).

Almost surely, 2^11965271 is an apocalyptic number.

11965271 is a deficient number, since it is larger than the sum of its proper divisors (1).

11965271 is an equidigital number, since it uses as much as digits as its factorization.

11965271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 32.

The square root of 11965271 is about 3459.0852837130. The cubic root of 11965271 is about 228.7217752111.

The spelling of 11965271 in words is "eleven million, nine hundred sixty-five thousand, two hundred seventy-one".