2085631 has 4 divisors (see below), whose sum is σ = 2092264. Its totient is φ = 2079000.

The previous prime is 2085623. The next prime is 2085659. The reversal of 2085631 is 1365802.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1365802 = 2 ⋅682901.

It is a cyclic number.

It is not a de Polignac number, because 2085631 - 2³ = 2085623 is a prime.

It is a super-2 number, since 2×2085631² = 8699713336322, which contains 22 as substring.

It is a Duffinian number.

2085631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2085596 and 2085605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2085691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2820 + ... + 3481.

It is an arithmetic number, because the mean of its divisors is an integer number (523066).

2^2085631 is an apocalyptic number.

2085631 is a deficient number, since it is larger than the sum of its proper divisors (6633).

2085631 is an equidigital number, since it uses as much as digits as its factorization.

2085631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6632.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 2085631 is about 1444.1713887209. The cubic root of 2085631 is about 127.7651741122.

The spelling of 2085631 in words is "two million, eighty-five thousand, six hundred thirty-one".