2085931 has 2 divisors, whose sum is σ = 2085932. Its totient is φ = 2085930.

The previous prime is 2085929. The next prime is 2085943. The reversal of 2085931 is 1395802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2085931 - 2¹ = 2085929 is a prime.

It is a super-2 number, since 2×2085931² = 8702216273522, which contains 22 as substring.

Together with 2085929, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2085931.

It is not a weakly prime, because it can be changed into another prime (2085971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1042965 + 1042966.

It is an arithmetic number, because the mean of its divisors is an integer number (1042966).

2^2085931 is an apocalyptic number.

2085931 is a deficient number, since it is larger than the sum of its proper divisors (1).

2085931 is an equidigital number, since it uses as much as digits as its factorization.

2085931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 2085931 is about 1444.2752507746. The cubic root of 2085931 is about 127.7712997906.

Subtracting from 2085931 its sum of digits (28), we obtain a triangular number (2085903 = T₂₀₄₂).

The spelling of 2085931 in words is "two million, eighty-five thousand, nine hundred thirty-one".