111312343 has 4 divisors (see below), whose sum is σ = 112721440. Its totient is φ = 109903248.

The previous prime is 111312307. The next prime is 111312361. The reversal of 111312343 is 343213111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343213111 = 199 ⋅1724689.

It is a cyclic number.

It is not a de Polignac number, because 111312343 - 2¹⁷ = 111181271 is a prime.

It is a super-3 number, since 3×111312343³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111312343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312143) 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 3 ways as a sum of consecutive naturals, for example, 704430 + ... + 704587.

It is an arithmetic number, because the mean of its divisors is an integer number (28180360).

Almost surely, 2^111312343 is an apocalyptic number.

111312343 is a deficient number, since it is larger than the sum of its proper divisors (1409097).

111312343 is an equidigital number, since it uses as much as digits as its factorization.

111312343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409096.

The product of its digits is 216, while the sum is 19.

The square root of 111312343 is about 10550.4664825779. The cubic root of 111312343 is about 481.0399083419.

Adding to 111312343 its reverse (343213111), we get a palindrome (454525454).

It can be divided in two parts, 1113 and 12343, that added together give a square (13456 = 116²).

The spelling of 111312343 in words is "one hundred eleven million, three hundred twelve thousand, three hundred forty-three".