2806231 has 2 divisors, whose sum is σ = 2806232. Its totient is φ = 2806230.

The previous prime is 2806211. The next prime is 2806247. The reversal of 2806231 is 1326082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2806231 is a prime.

It is a super-2 number, since 2×2806231² = 15749864850722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2806201) 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, 1403115 + 1403116.

It is an arithmetic number, because the mean of its divisors is an integer number (1403116).

2^2806231 is an apocalyptic number.

2806231 is a deficient number, since it is larger than the sum of its proper divisors (1).

2806231 is an equidigital number, since it uses as much as digits as its factorization.

2806231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 2806231 is about 1675.1808857553. The cubic root of 2806231 is about 141.0504488925.

The spelling of 2806231 in words is "two million, eight hundred six thousand, two hundred thirty-one".