3040321 has 2 divisors, whose sum is σ = 3040322. Its totient is φ = 3040320.

The previous prime is 3040313. The next prime is 3040333. The reversal of 3040321 is 1230403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2250000 + 790321 = 1500^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 3040321 - 2³ = 3040313 is a prime.

3040321 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3040351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1520160 + 1520161.

It is an arithmetic number, because the mean of its divisors is an integer number (1520161).

Almost surely, 2^3040321 is an apocalyptic number.

It is an amenable number.

3040321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3040321 is an equidigital number, since it uses as much as digits as its factorization.

3040321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 3040321 is about 1743.6516280496. The cubic root of 3040321 is about 144.8682274903.

Adding to 3040321 its reverse (1230403), we get a palindrome (4270724).

The spelling of 3040321 in words is "three million, forty thousand, three hundred twenty-one".