3881111 has 12 divisors (see below), whose sum is σ = 4416552. Its totient is φ = 3389904.

The previous prime is 3881093. The next prime is 3881113. The reversal of 3881111 is 1111883.

It is a de Polignac number, because none of the positive numbers 2^k-3881111 is a prime.

It is a Duffinian number.

3881111 is a modest number, since divided by 1111 gives 388 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881113) 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 in 11 ways as a sum of consecutive naturals, for example, 4280 + ... + 5106.

It is an arithmetic number, because the mean of its divisors is an integer number (368046).

Almost surely, 2^3881111 is an apocalyptic number.

3881111 is a deficient number, since it is larger than the sum of its proper divisors (535441).

3881111 is a wasteful number, since it uses less digits than its factorization.

3881111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878 (or 859 counting only the distinct ones).

The product of its digits is 192, while the sum is 23.

The square root of 3881111 is about 1970.0535525716. The cubic root of 3881111 is about 157.1515568973.

Adding to 3881111 its reverse (1111883), we get a palindrome (4992994).

The spelling of 3881111 in words is "three million, eight hundred eighty-one thousand, one hundred eleven".