3271861 has 2 divisors, whose sum is σ = 3271862. Its totient is φ = 3271860.

The previous prime is 3271843. The next prime is 3271883. The reversal of 3271861 is 1681723.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2540836 + 731025 = 1594^2 + 855^2 .

It is an emirp because it is prime and its reverse (1681723) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3271861 - 2⁷ = 3271733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3271561) 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, 1635930 + 1635931.

It is an arithmetic number, because the mean of its divisors is an integer number (1635931).

Almost surely, 2^3271861 is an apocalyptic number.

It is an amenable number.

3271861 is a deficient number, since it is larger than the sum of its proper divisors (1).

3271861 is an equidigital number, since it uses as much as digits as its factorization.

3271861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 3271861 is about 1808.8286264873. The cubic root of 3271861 is about 148.4561801274.

The spelling of 3271861 in words is "three million, two hundred seventy-one thousand, eight hundred sixty-one".