863143 has 2 divisors, whose sum is σ = 863144. Its totient is φ = 863142.

The previous prime is 863131. The next prime is 863153. The reversal of 863143 is 341368.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 863143 - 2¹³ = 854951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431571 + 431572.

It is an arithmetic number, because the mean of its divisors is an integer number (431572).

2⁸⁶³¹⁴³ is an apocalyptic number.

863143 is a deficient number, since it is larger than the sum of its proper divisors (1).

863143 is an equidigital number, since it uses as much as digits as its factorization.

863143 is an evil number, because the sum of its binary digits is even.

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

The square root of 863143 is about 929.0548961176. The cubic root of 863143 is about 95.2125618972.

The spelling of 863143 in words is "eight hundred sixty-three thousand, one hundred forty-three".