109723 has 4 divisors (see below), whose sum is σ = 110808. Its totient is φ = 108640.

The previous prime is 109721. The next prime is 109741. The reversal of 109723 is 327901.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 109723 - 2¹ = 109721 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 109694 and 109703.

It is not an unprimeable number, because it can be changed into a prime (109721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 373 + ... + 598.

It is an arithmetic number, because the mean of its divisors is an integer number (27702).

2¹⁰⁹⁷²³ is an apocalyptic number.

109723 is a deficient number, since it is larger than the sum of its proper divisors (1085).

109723 is an equidigital number, since it uses as much as digits as its factorization.

109723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084.

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

The square root of 109723 is about 331.2446225979. The cubic root of 109723 is about 47.8739458759.

The spelling of 109723 in words is "one hundred nine thousand, seven hundred twenty-three".