863123 has 2 divisors, whose sum is σ = 863124. Its totient is φ = 863122.

The previous prime is 863119. The next prime is 863131. The reversal of 863123 is 321368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863123 - 2² = 863119 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 863123.

It is not a weakly prime, because it can be changed into another prime (863143) 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, 431561 + 431562.

It is an arithmetic number, because the mean of its divisors is an integer number (431562).

2⁸⁶³¹²³ is an apocalyptic number.

863123 is a deficient number, since it is larger than the sum of its proper divisors (1).

863123 is an equidigital number, since it uses as much as digits as its factorization.

863123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 863123 is about 929.0441324286. The cubic root of 863123 is about 95.2118264972.

The spelling of 863123 in words is "eight hundred sixty-three thousand, one hundred twenty-three".