3111228 has 18 divisors (see below), whose sum is σ = 7864584. Its totient is φ = 1037064.

The previous prime is 3111223. The next prime is 3111271. The reversal of 3111228 is 8221113.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 3111228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3111223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43176 + ... + 43247.

Almost surely, 2^3111228 is an apocalyptic number.

It is an amenable number.

3111228 is an abundant number, since it is smaller than the sum of its proper divisors (4753356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3111228 is a wasteful number, since it uses less digits than its factorization.

3111228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86433 (or 86428 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 3111228 is about 1763.8673419506. The cubic root of 3111228 is about 145.9857995822.

The spelling of 3111228 in words is "three million, one hundred eleven thousand, two hundred twenty-eight".