111123311443 has 16 divisors (see below), whose sum is σ = 118751149440. Its totient is φ = 103619318400.

The previous prime is 111123311423. The next prime is 111123311449. The reversal of 111123311443 is 344113321111.

It is a cyclic number.

It is not a de Polignac number, because 111123311443 - 2¹³ = 111123303251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111123311449) 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, 1338208 + ... + 1418818.

It is an arithmetic number, because the mean of its divisors is an integer number (7421946840).

Almost surely, 2^111123311443 is an apocalyptic number.

111123311443 is a deficient number, since it is larger than the sum of its proper divisors (7627837997).

111123311443 is a wasteful number, since it uses less digits than its factorization.

111123311443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81378.

The product of its digits is 864, while the sum is 25.

Adding to 111123311443 its reverse (344113321111), we get a palindrome (455236632554).

The spelling of 111123311443 in words is "one hundred eleven billion, one hundred twenty-three million, three hundred eleven thousand, four hundred forty-three".