111312234443 has 4 divisors (see below), whose sum is σ = 111325306248. Its totient is φ = 111299162640.

The previous prime is 111312234437. The next prime is 111312234457. The reversal of 111312234443 is 344432213111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111312234443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111312234343) 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, 6523121 + ... + 6540162.

It is an arithmetic number, because the mean of its divisors is an integer number (27831326562).

Almost surely, 2^111312234443 is an apocalyptic number.

111312234443 is a deficient number, since it is larger than the sum of its proper divisors (13071805).

111312234443 is an equidigital number, since it uses as much as digits as its factorization.

111312234443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071804.

The product of its digits is 6912, while the sum is 29.

Adding to 111312234443 its reverse (344432213111), we get a palindrome (455744447554).

The spelling of 111312234443 in words is "one hundred eleven billion, three hundred twelve million, two hundred thirty-four thousand, four hundred forty-three".