8112191 has 2 divisors, whose sum is σ = 8112192. Its totient is φ = 8112190.

The previous prime is 8112187. The next prime is 8112193. The reversal of 8112191 is 1912118.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8112191 - 2² = 8112187 is a prime.

Together with 8112193, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8112193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056095 + 4056096.

It is an arithmetic number, because the mean of its divisors is an integer number (4056096).

Almost surely, 2^8112191 is an apocalyptic number.

8112191 is a deficient number, since it is larger than the sum of its proper divisors (1).

8112191 is an equidigital number, since it uses as much as digits as its factorization.

8112191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 23.

The square root of 8112191 is about 2848.1908292809. The cubic root of 8112191 is about 200.9305883113.

The spelling of 8112191 in words is "eight million, one hundred twelve thousand, one hundred ninety-one".