531863 has 2 divisors, whose sum is σ = 531864. Its totient is φ = 531862.

The previous prime is 531857. The next prime is 531871. The reversal of 531863 is 368135.

531863 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531863 - 2⁴ = 531847 is a prime.

It is a Chen prime.

It is equal to p₄₃₉₆₄ and since 531863 and 43964 have the same sum of digits, it is a Honaker prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265931 + 265932.

It is an arithmetic number, because the mean of its divisors is an integer number (265932).

2⁵³¹⁸⁶³ is an apocalyptic number.

531863 is a deficient number, since it is larger than the sum of its proper divisors (1).

531863 is an equidigital number, since it uses as much as digits as its factorization.

531863 is an evil number, because the sum of its binary digits is even.

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

The square root of 531863 is about 729.2893801503. The cubic root of 531863 is about 81.0214341488.

Adding to 531863 its reverse (368135), we get a palindrome (899998).

The spelling of 531863 in words is "five hundred thirty-one thousand, eight hundred sixty-three".