3191228 has 12 divisors (see below), whose sum is σ = 5615232. Its totient is φ = 1586880.

The previous prime is 3191219. The next prime is 3191261. The reversal of 3191228 is 8221913.

3191228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3191228² = 20367872295968, which contains 22 as substring.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3191197 and 3191206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1325 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (467936).

Almost surely, 2^3191228 is an apocalyptic number.

It is an amenable number.

3191228 is a deficient number, since it is larger than the sum of its proper divisors (2424004).

3191228 is a wasteful number, since it uses less digits than its factorization.

3191228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372 (or 4370 counting only the distinct ones).

The product of its digits is 864, while the sum is 26.

The square root of 3191228 is about 1786.4008508731. The cubic root of 3191228 is about 147.2264853689.

The spelling of 3191228 in words is "three million, one hundred ninety-one thousand, two hundred twenty-eight".