2089831 has 2 divisors, whose sum is σ = 2089832. Its totient is φ = 2089830.

The previous prime is 2089807. The next prime is 2089847. The reversal of 2089831 is 1389802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2089831 is a prime.

It is a super-2 number, since 2×2089831² = 8734787217122, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2089793 and 2089802.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2089231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1044915 + 1044916.

It is an arithmetic number, because the mean of its divisors is an integer number (1044916).

2^2089831 is an apocalyptic number.

2089831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2089831 is an equidigital number, since it uses as much as digits as its factorization.

2089831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 2089831 is about 1445.6247784263. The cubic root of 2089831 is about 127.8508802169.

The spelling of 2089831 in words is "two million, eighty-nine thousand, eight hundred thirty-one".