2164831 has 4 divisors (see below), whose sum is σ = 2292192. Its totient is φ = 2037472.

The previous prime is 2164817. The next prime is 2164843. The reversal of 2164831 is 1384612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2164831 - 2¹⁵ = 2132063 is a prime.

It is a super-2 number, since 2×2164831² = 9372986517122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2164796 and 2164805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63655 + ... + 63688.

It is an arithmetic number, because the mean of its divisors is an integer number (573048).

2^2164831 is an apocalyptic number.

2164831 is a deficient number, since it is larger than the sum of its proper divisors (127361).

2164831 is a wasteful number, since it uses less digits than its factorization.

2164831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127360.

The product of its digits is 1152, while the sum is 25.

The square root of 2164831 is about 1471.3364672977. The cubic root of 2164831 is about 129.3623806995.

The spelling of 2164831 in words is "two million, one hundred sixty-four thousand, eight hundred thirty-one".