2090831 has 2 divisors, whose sum is σ = 2090832. Its totient is φ = 2090830.

The previous prime is 2090827. The next prime is 2090843. The reversal of 2090831 is 1380902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2090831 - 2² = 2090827 is a prime.

It is a super-2 number, since 2×2090831² = 8743148541122, 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 = 2090797 and 2090806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2090821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045415 + 1045416.

It is an arithmetic number, because the mean of its divisors is an integer number (1045416).

2^2090831 is an apocalyptic number.

2090831 is a deficient number, since it is larger than the sum of its proper divisors (1).

2090831 is an equidigital number, since it uses as much as digits as its factorization.

2090831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 2090831 is about 1445.9706082767. The cubic root of 2090831 is about 127.8712695040.

The spelling of 2090831 in words is "two million, ninety thousand, eight hundred thirty-one".