228111 has 8 divisors (see below), whose sum is σ = 327600. Its totient is φ = 140352.

The previous prime is 228103. The next prime is 228113. The reversal of 228111 is 111822.

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

It is not a de Polignac number, because 228111 - 2³ = 228103 is a prime.

It is an Ulam number.

228111 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228113) 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, 2886 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (40950).

2²²⁸¹¹¹ is an apocalyptic number.

228111 is a deficient number, since it is larger than the sum of its proper divisors (99489).

228111 is a wasteful number, since it uses less digits than its factorization.

228111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5865.

The product of its digits is 32, while the sum is 15.

The square root of 228111 is about 477.6096732689. The cubic root of 228111 is about 61.1010597488.

Adding to 228111 its reverse (111822), we get a palindrome (339933).

The spelling of 228111 in words is "two hundred twenty-eight thousand, one hundred eleven".