91130313193 has 2 divisors, whose sum is σ = 91130313194. Its totient is φ = 91130313192.

The previous prime is 91130313191. The next prime is 91130313217. The reversal of 91130313193 is 39131303119.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88996612329 + 2133700864 = 298323^2 + 46192^2 .

It is a cyclic number.

It is not a de Polignac number, because 91130313193 - 2¹ = 91130313191 is a prime.

Together with 91130313191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (91130313191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45565156596 + 45565156597.

It is an arithmetic number, because the mean of its divisors is an integer number (45565156597).

Almost surely, 2^91130313193 is an apocalyptic number.

It is an amenable number.

91130313193 is a deficient number, since it is larger than the sum of its proper divisors (1).

91130313193 is an equidigital number, since it uses as much as digits as its factorization.

91130313193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6561, while the sum is 34.

The spelling of 91130313193 in words is "ninety-one billion, one hundred thirty million, three hundred thirteen thousand, one hundred ninety-three".