3271391 has 2 divisors, whose sum is σ = 3271392. Its totient is φ = 3271390.

The previous prime is 3271381. The next prime is 3271441. The reversal of 3271391 is 1931723.

It is a weak prime.

It is an emirp because it is prime and its reverse (1931723) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3271391 is a prime.

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 3271391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3271321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1635695 + 1635696.

It is an arithmetic number, because the mean of its divisors is an integer number (1635696).

Almost surely, 2^3271391 is an apocalyptic number.

3271391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3271391 is an equidigital number, since it uses as much as digits as its factorization.

3271391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134, while the sum is 26.

The square root of 3271391 is about 1808.6987034882. The cubic root of 3271391 is about 148.4490712531.

The spelling of 3271391 in words is "three million, two hundred seventy-one thousand, three hundred ninety-one".