91123367 has 2 divisors, whose sum is σ = 91123368. Its totient is φ = 91123366.

The previous prime is 91123363. The next prime is 91123369. The reversal of 91123367 is 76332119.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91123367 - 2² = 91123363 is a prime.

Together with 91123369, 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 (91123363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45561683 + 45561684.

It is an arithmetic number, because the mean of its divisors is an integer number (45561684).

Almost surely, 2^91123367 is an apocalyptic number.

91123367 is a deficient number, since it is larger than the sum of its proper divisors (1).

91123367 is an equidigital number, since it uses as much as digits as its factorization.

91123367 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 91123367 is about 9545.8560119038. The cubic root of 91123367 is about 449.9973119181.

The spelling of 91123367 in words is "ninety-one million, one hundred twenty-three thousand, three hundred sixty-seven".