91317771319 has 8 divisors (see below), whose sum is σ = 96693555600. Its totient is φ = 85942448256.

The previous prime is 91317771287. The next prime is 91317771323.

It is a happy number.

91317771319 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91317771319 - 2⁵ = 91317771287 is a prime.

It is a super-2 number, since 2×91317771319² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91317771359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344832 + ... + 549130.

It is an arithmetic number, because the mean of its divisors is an integer number (12086694450).

Almost surely, 2^91317771319 is an apocalyptic number.

91317771319 is a deficient number, since it is larger than the sum of its proper divisors (5375784281).

91317771319 is a wasteful number, since it uses less digits than its factorization.

91317771319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230609.

The product of its digits is 250047, while the sum is 49.

The spelling of 91317771319 in words is "ninety-one billion, three hundred seventeen million, seven hundred seventy-one thousand, three hundred nineteen".