111123623 has 8 divisors (see below), whose sum is σ = 123532416. Its totient is φ = 99266400.

The previous prime is 111123581. The next prime is 111123641. The reversal of 111123623 is 326321111.

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

It is a cyclic number.

It is not a de Polignac number, because 111123623 - 2⁶ = 111123559 is a prime.

It is a super-2 number, since 2×111123623² = 24696919177292258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111123595 and 111123604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111123643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137468 + ... + 138273.

It is an arithmetic number, because the mean of its divisors is an integer number (15441552).

Almost surely, 2^111123623 is an apocalyptic number.

111123623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

111123623 is a deficient number, since it is larger than the sum of its proper divisors (12408793).

111123623 is a wasteful number, since it uses less digits than its factorization.

111123623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275785.

The product of its digits is 216, while the sum is 20.

The square root of 111123623 is about 10541.5190081885. The cubic root of 111123623 is about 480.7679013582.

Adding to 111123623 its reverse (326321111), we get a palindrome (437444734).

The spelling of 111123623 in words is "one hundred eleven million, one hundred twenty-three thousand, six hundred twenty-three".