431863 has 2 divisors, whose sum is σ = 431864. Its totient is φ = 431862.

The previous prime is 431857. The next prime is 431867. The reversal of 431863 is 368134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431863 - 2⁵ = 431831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431867) 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, 215931 + 215932.

It is an arithmetic number, because the mean of its divisors is an integer number (215932).

2⁴³¹⁸⁶³ is an apocalyptic number.

431863 is a deficient number, since it is larger than the sum of its proper divisors (1).

431863 is an equidigital number, since it uses as much as digits as its factorization.

431863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 25.

The square root of 431863 is about 657.1628413110. The cubic root of 431863 is about 75.5872709829.

Adding to 431863 its reverse (368134), we get a palindrome (799997).

It can be divided in two parts, 431 and 863, that multiplied together give a triangular number (371953 = T₈₆₂).

The spelling of 431863 in words is "four hundred thirty-one thousand, eight hundred sixty-three".