111343405 has 4 divisors (see below), whose sum is σ = 133612092. Its totient is φ = 89074720.

The previous prime is 111343403. The next prime is 111343429. The reversal of 111343405 is 504343111.

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 18818244 + 92525161 = 4338^2 + 9619^2 .

It is not a de Polignac number, because 111343405 - 2¹ = 111343403 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 (111343403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11134336 + ... + 11134345.

It is an arithmetic number, because the mean of its divisors is an integer number (33403023).

Almost surely, 2^111343405 is an apocalyptic number.

It is an amenable number.

111343405 is a deficient number, since it is larger than the sum of its proper divisors (22268687).

111343405 is an equidigital number, since it uses as much as digits as its factorization.

111343405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22268686.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 111343405 is about 10551.9384475081. The cubic root of 111343405 is about 481.0846493281.

Adding to 111343405 its reverse (504343111), we get a palindrome (615686516).

The spelling of 111343405 in words is "one hundred eleven million, three hundred forty-three thousand, four hundred five".