3871111 has 2 divisors, whose sum is σ = 3871112. Its totient is φ = 3871110.

The previous prime is 3871103. The next prime is 3871129. The reversal of 3871111 is 1111783.

3871111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3871111 - 2³ = 3871103 is a prime.

It is a Chen prime.

3871111 is a modest number, since divided by 1111 gives 387 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3871151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935555 + 1935556.

It is an arithmetic number, because the mean of its divisors is an integer number (1935556).

Almost surely, 2^3871111 is an apocalyptic number.

3871111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871111 is an equidigital number, since it uses as much as digits as its factorization.

3871111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 168, while the sum is 22.

The square root of 3871111 is about 1967.5139135467. The cubic root of 3871111 is about 157.0164695287.

Adding to 3871111 its reverse (1111783), we get a palindrome (4982894).

The spelling of 3871111 in words is "three million, eight hundred seventy-one thousand, one hundred eleven".