3281911 has 2 divisors, whose sum is σ = 3281912. Its totient is φ = 3281910.

The previous prime is 3281909. The next prime is 3281933. The reversal of 3281911 is 1191823.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3281911 - 2¹ = 3281909 is a prime.

Together with 3281909, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3281981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640955 + 1640956.

It is an arithmetic number, because the mean of its divisors is an integer number (1640956).

Almost surely, 2^3281911 is an apocalyptic number.

3281911 is a deficient number, since it is larger than the sum of its proper divisors (1).

3281911 is an equidigital number, since it uses as much as digits as its factorization.

3281911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 3281911 is about 1811.6045374198. The cubic root of 3281911 is about 148.6080263902.

The spelling of 3281911 in words is "three million, two hundred eighty-one thousand, nine hundred eleven".