3391321 has 2 divisors, whose sum is σ = 3391322. Its totient is φ = 3391320.

The previous prime is 3391303. The next prime is 3391331. The reversal of 3391321 is 1231933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 151321 = 1800^2 + 389^2 .

It is a cyclic number.

It is not a de Polignac number, because 3391321 - 2⁹ = 3390809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3391292 and 3391301.

It is not a weakly prime, because it can be changed into another prime (3391301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1695660 + 1695661.

It is an arithmetic number, because the mean of its divisors is an integer number (1695661).

Almost surely, 2^3391321 is an apocalyptic number.

It is an amenable number.

3391321 is a deficient number, since it is larger than the sum of its proper divisors (1).

3391321 is an equidigital number, since it uses as much as digits as its factorization.

3391321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 486, while the sum is 22.

The square root of 3391321 is about 1841.5539633690. The cubic root of 3391321 is about 150.2414038786.

The spelling of 3391321 in words is "three million, three hundred ninety-one thousand, three hundred twenty-one".