91123017 has 8 divisors (see below), whose sum is σ = 125687040. Its totient is φ = 58653840.

The previous prime is 91123007. The next prime is 91123051. The reversal of 91123017 is 71032119.

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

It is not a de Polignac number, because 91123017 - 2¹⁵ = 91090249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91123007) 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, 523609 + ... + 523782.

It is an arithmetic number, because the mean of its divisors is an integer number (15710880).

Almost surely, 2^91123017 is an apocalyptic number.

It is an amenable number.

91123017 is a deficient number, since it is larger than the sum of its proper divisors (34564023).

91123017 is a wasteful number, since it uses less digits than its factorization.

91123017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1047423.

The product of its (nonzero) digits is 378, while the sum is 24.

The square root of 91123017 is about 9545.8376793239. The cubic root of 91123017 is about 449.9967357788.

The spelling of 91123017 in words is "ninety-one million, one hundred twenty-three thousand, seventeen".