111343613 has 4 divisors (see below), whose sum is σ = 111659388. Its totient is φ = 111027840.

The previous prime is 111343597. The next prime is 111343633. The reversal of 111343613 is 316343111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76510009 + 34833604 = 8747^2 + 5902^2 .

It is a cyclic number.

It is not a de Polignac number, because 111343613 - 2⁴ = 111343597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111343633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157358 + ... + 158063.

It is an arithmetic number, because the mean of its divisors is an integer number (27914847).

Almost surely, 2^111343613 is an apocalyptic number.

It is an amenable number.

111343613 is a deficient number, since it is larger than the sum of its proper divisors (315775).

111343613 is an equidigital number, since it uses as much as digits as its factorization.

111343613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315774.

The product of its digits is 648, while the sum is 23.

The square root of 111343613 is about 10551.9483035125. The cubic root of 111343613 is about 481.0849488984.

Adding to 111343613 its reverse (316343111), we get a palindrome (427686724).

The spelling of 111343613 in words is "one hundred eleven million, three hundred forty-three thousand, six hundred thirteen".