3831681 has 16 divisors (see below), whose sum is σ = 6182784. Its totient is φ = 2060544.

The previous prime is 3831661. The next prime is 3831689. The reversal of 3831681 is 1861383.

It is not a de Polignac number, because 3831681 - 2⁵ = 3831649 is a prime.

It is a super-2 number, since 2×3831681² = 29363558571522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3831689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5010 + ... + 5723.

It is an arithmetic number, because the mean of its divisors is an integer number (386424).

Almost surely, 2^3831681 is an apocalyptic number.

It is an amenable number.

3831681 is a deficient number, since it is larger than the sum of its proper divisors (2351103).

3831681 is a wasteful number, since it uses less digits than its factorization.

3831681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10760.

The product of its digits is 3456, while the sum is 30.

The square root of 3831681 is about 1957.4680074014. The cubic root of 3831681 is about 156.4815413044.

The spelling of 3831681 in words is "three million, eight hundred thirty-one thousand, six hundred eighty-one".