11971163 has 4 divisors (see below), whose sum is σ = 12197088. Its totient is φ = 11745240.

The previous prime is 11971117. The next prime is 11971199. The reversal of 11971163 is 36117911.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11971163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11971763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112883 + ... + 112988.

It is an arithmetic number, because the mean of its divisors is an integer number (3049272).

Almost surely, 2^11971163 is an apocalyptic number.

11971163 is a deficient number, since it is larger than the sum of its proper divisors (225925).

11971163 is an equidigital number, since it uses as much as digits as its factorization.

11971163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225924.

The product of its digits is 1134, while the sum is 29.

The square root of 11971163 is about 3459.9368491347. The cubic root of 11971163 is about 228.7593118329.

The spelling of 11971163 in words is "eleven million, nine hundred seventy-one thousand, one hundred sixty-three".