3144221 has 2 divisors, whose sum is σ = 3144222. Its totient is φ = 3144220.

The previous prime is 3144217. The next prime is 3144257. The reversal of 3144221 is 1224413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2992900 + 151321 = 1730^2 + 389^2 .

It is an emirp because it is prime and its reverse (1224413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3144221 - 2² = 3144217 is a prime.

It is a super-2 number, since 2×3144221² = 19772251393682, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3144221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3144821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572110 + 1572111.

It is an arithmetic number, because the mean of its divisors is an integer number (1572111).

Almost surely, 2^3144221 is an apocalyptic number.

It is an amenable number.

3144221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3144221 is an equidigital number, since it uses as much as digits as its factorization.

3144221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 17.

The square root of 3144221 is about 1773.1951387256. The cubic root of 3144221 is about 146.5000213553.

Adding to 3144221 its product of digits (192), we get a palindrome (3144413).

Adding to 3144221 its reverse (1224413), we get a palindrome (4368634).

The spelling of 3144221 in words is "three million, one hundred forty-four thousand, two hundred twenty-one".