111345 has 16 divisors (see below), whose sum is σ = 192192. Its totient is φ = 54720.

The previous prime is 111341. The next prime is 111347. The reversal of 111345 is 543111.

It is not a de Polignac number, because 111345 - 2² = 111341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (111341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91 + ... + 480.

It is an arithmetic number, because the mean of its divisors is an integer number (12012).

2¹¹¹³⁴⁵ is an apocalyptic number.

111345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

111345 is a deficient number, since it is larger than the sum of its proper divisors (80847).

111345 is a wasteful number, since it uses less digits than its factorization.

111345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592.

The product of its digits is 60, while the sum is 15.

The square root of 111345 is about 333.6839822347. The cubic root of 111345 is about 48.1086946505.

Adding to 111345 its reverse (543111), we get a palindrome (654456).

The spelling of 111345 in words is "one hundred eleven thousand, three hundred forty-five".