563831 has 2 divisors, whose sum is σ = 563832. Its totient is φ = 563830.

The previous prime is 563821. The next prime is 563837. The reversal of 563831 is 138365.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-563831 is a prime.

It is a super-2 number, since 2×563831² = 635810793122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 563831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (563837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 281915 + 281916.

It is an arithmetic number, because the mean of its divisors is an integer number (281916).

2⁵⁶³⁸³¹ is an apocalyptic number.

563831 is a deficient number, since it is larger than the sum of its proper divisors (1).

563831 is an equidigital number, since it uses as much as digits as its factorization.

563831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 26.

The square root of 563831 is about 750.8868090465. The cubic root of 563831 is about 82.6132390492.

It can be divided in two parts, 5 and 63831, that added together give a palindrome (63836).

The spelling of 563831 in words is "five hundred sixty-three thousand, eight hundred thirty-one".