111441311 has 4 divisors (see below), whose sum is σ = 115036224. Its totient is φ = 107846400.

The previous prime is 111441293. The next prime is 111441331. The reversal of 111441311 is 113144111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113144111 = 479 ⋅236209.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111441311 is a prime.

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 111441311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111441331) 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, 1797410 + ... + 1797471.

It is an arithmetic number, because the mean of its divisors is an integer number (28759056).

Almost surely, 2^111441311 is an apocalyptic number.

111441311 is a deficient number, since it is larger than the sum of its proper divisors (3594913).

111441311 is an equidigital number, since it uses as much as digits as its factorization.

111441311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594912.

The product of its digits is 48, while the sum is 17.

The square root of 111441311 is about 10556.5766704931. The cubic root of 111441311 is about 481.2256164404.

Adding to 111441311 its reverse (113144111), we get a palindrome (224585422).

The spelling of 111441311 in words is "one hundred eleven million, four hundred forty-one thousand, three hundred eleven".