111723 has 8 divisors (see below), whose sum is σ = 150528. Its totient is φ = 73704.

The previous prime is 111721. The next prime is 111731. The reversal of 111723 is 327111.

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

It is not a de Polignac number, because 111723 - 2¹ = 111721 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 111723.

It is not an unprimeable number, because it can be changed into a prime (111721) 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, 390 + ... + 612.

It is an arithmetic number, because the mean of its divisors is an integer number (18816).

2¹¹¹⁷²³ is an apocalyptic number.

111723 is a deficient number, since it is larger than the sum of its proper divisors (38805).

111723 is a wasteful number, since it uses less digits than its factorization.

111723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its digits is 42, while the sum is 15.

The square root of 111723 is about 334.2499065071. The cubic root of 111723 is about 48.1630738225.

Adding to 111723 its reverse (327111), we get a palindrome (438834).

It can be divided in two parts, 11172 and 3, that added together give a triangular number (11175 = T₁₄₉).

The spelling of 111723 in words is "one hundred eleven thousand, seven hundred twenty-three", and thus it is an iban number.