3104221 has 2 divisors, whose sum is σ = 3104222. Its totient is φ = 3104220.

The previous prime is 3104219. The next prime is 3104237. The reversal of 3104221 is 1224013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1863225 + 1240996 = 1365^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 3104221 - 2¹ = 3104219 is a prime.

Together with 3104219, it forms a pair of twin primes.

3104221 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3108221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552110 + 1552111.

It is an arithmetic number, because the mean of its divisors is an integer number (1552111).

Almost surely, 2^3104221 is an apocalyptic number.

It is an amenable number.

3104221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3104221 is an equidigital number, since it uses as much as digits as its factorization.

3104221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 3104221 is about 1761.8799618589. The cubic root of 3104221 is about 145.8761224825.

Adding to 3104221 its reverse (1224013), we get a palindrome (4328234).

The spelling of 3104221 in words is "three million, one hundred four thousand, two hundred twenty-one".