3831881 has 4 divisors (see below), whose sum is σ = 3861264. Its totient is φ = 3802500.

The previous prime is 3831871. The next prime is 3831889. The reversal of 3831881 is 1881383.

3831881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3831881 is a prime.

It is a super-2 number, since 2×3831881² = 29366623996322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3831889) 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 in 3 ways as a sum of consecutive naturals, for example, 14495 + ... + 14756.

It is an arithmetic number, because the mean of its divisors is an integer number (965316).

Almost surely, 2^3831881 is an apocalyptic number.

It is an amenable number.

3831881 is a deficient number, since it is larger than the sum of its proper divisors (29383).

3831881 is a wasteful number, since it uses less digits than its factorization.

3831881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29382.

The product of its digits is 4608, while the sum is 32.

The square root of 3831881 is about 1957.5190931380. The cubic root of 3831881 is about 156.4842638487.

The spelling of 3831881 in words is "three million, eight hundred thirty-one thousand, eight hundred eighty-one".