3881831 has 8 divisors (see below), whose sum is σ = 4127760. Its totient is φ = 3637888.

The previous prime is 3881807. The next prime is 3881837. The reversal of 3881831 is 1381883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3881831 - 2¹⁴ = 3865447 is a prime.

It is a super-2 number, since 2×3881831² = 30137223825122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3881837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6320 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (515970).

Almost surely, 2^3881831 is an apocalyptic number.

3881831 is a deficient number, since it is larger than the sum of its proper divisors (245929).

3881831 is a wasteful number, since it uses less digits than its factorization.

3881831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993.

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

The square root of 3881831 is about 1970.2362802466. The cubic root of 3881831 is about 157.1612742287.

The spelling of 3881831 in words is "three million, eight hundred eighty-one thousand, eight hundred thirty-one".