111228311 has 8 divisors (see below), whose sum is σ = 115209120. Its totient is φ = 107257248.

The previous prime is 111228289. The next prime is 111228317. The reversal of 111228311 is 113822111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111228311 - 2¹⁴ = 111211927 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 (111228317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26990 + ... + 30836.

It is an arithmetic number, because the mean of its divisors is an integer number (14401140).

Almost surely, 2^111228311 is an apocalyptic number.

111228311 is a deficient number, since it is larger than the sum of its proper divisors (3980809).

111228311 is an equidigital number, since it uses as much as digits as its factorization.

111228311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4873.

The product of its digits is 96, while the sum is 20.

The square root of 111228311 is about 10546.4833475429. The cubic root of 111228311 is about 480.9188288619.

The spelling of 111228311 in words is "one hundred eleven million, two hundred twenty-eight thousand, three hundred eleven".