91306105 has 8 divisors (see below), whose sum is σ = 119528064. Its totient is φ = 66404400.

The previous prime is 91306091. The next prime is 91306109. The reversal of 91306105 is 50160319.

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

It is not a de Polignac number, because 91306105 - 2⁵ = 91306073 is a prime.

It is a super-3 number, since 3×91306105³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 91306105.

It is not an unprimeable number, because it can be changed into a prime (91306109) 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, 830001 + ... + 830110.

It is an arithmetic number, because the mean of its divisors is an integer number (14941008).

Almost surely, 2^91306105 is an apocalyptic number.

It is an amenable number.

91306105 is a deficient number, since it is larger than the sum of its proper divisors (28221959).

91306105 is a wasteful number, since it uses less digits than its factorization.

91306105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1660127.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 91306105 is about 9555.4228059254. The cubic root of 91306105 is about 450.2979179492.

The spelling of 91306105 in words is "ninety-one million, three hundred six thousand, one hundred five".