2163831 has 16 divisors (see below), whose sum is σ = 3041280. Its totient is φ = 1366560.

The previous prime is 2163829. The next prime is 2163851. The reversal of 2163831 is 1383612.

It is not a de Polignac number, because 2163831 - 2¹ = 2163829 is a prime.

It is a super-2 number, since 2×2163831² = 9364329193122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163851) 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, 4710 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (190080).

2^2163831 is an apocalyptic number.

2163831 is a deficient number, since it is larger than the sum of its proper divisors (877449).

2163831 is a wasteful number, since it uses less digits than its factorization.

2163831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its digits is 864, while the sum is 24.

The square root of 2163831 is about 1470.9966009478. The cubic root of 2163831 is about 129.3424588512.

The spelling of 2163831 in words is "two million, one hundred sixty-three thousand, eight hundred thirty-one".