3121228 has 12 divisors (see below), whose sum is σ = 5958792. Its totient is φ = 1418720.

The previous prime is 3121219. The next prime is 3121229. The reversal of 3121228 is 8221213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121229) 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, 35425 + ... + 35512.

It is an arithmetic number, because the mean of its divisors is an integer number (496566).

Almost surely, 2^3121228 is an apocalyptic number.

It is an amenable number.

3121228 is a deficient number, since it is larger than the sum of its proper divisors (2837564).

3121228 is a wasteful number, since it uses less digits than its factorization.

3121228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70952 (or 70950 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 3121228 is about 1766.6997481179. The cubic root of 3121228 is about 146.1420397878.

It can be divided in two parts, 312 and 1228, that added together give a triangular number (1540 = T₅₅).

The spelling of 3121228 in words is "three million, one hundred twenty-one thousand, two hundred twenty-eight".