91723 has 6 divisors (see below), whose sum is σ = 95676. Its totient is φ = 87912.

The previous prime is 91711. The next prime is 91733. The reversal of 91723 is 32719.

It is not a de Polignac number, because 91723 - 2⁵ = 91691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91694 and 91703.

It is not an unprimeable number, because it can be changed into a prime (91703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1336 + ... + 1402.

It is an arithmetic number, because the mean of its divisors is an integer number (15946).

2⁹¹⁷²³ is an apocalyptic number.

91723 is a deficient number, since it is larger than the sum of its proper divisors (3953).

91723 is an equidigital number, since it uses as much as digits as its factorization.

91723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 104 counting only the distinct ones).

The product of its digits is 378, while the sum is 22.

The square root of 91723 is about 302.8580525593. The cubic root of 91723 is about 45.0982216692.

The spelling of 91723 in words is "ninety-one thousand, seven hundred twenty-three".