123863 has 2 divisors, whose sum is σ = 123864. Its totient is φ = 123862.

The previous prime is 123853. The next prime is 123887. The reversal of 123863 is 368321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123863 - 2¹⁰ = 122839 is a prime.

It is a plaindrome in base 13.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61931 + 61932.

It is an arithmetic number, because the mean of its divisors is an integer number (61932).

2¹²³⁸⁶³ is an apocalyptic number.

123863 is a deficient number, since it is larger than the sum of its proper divisors (1).

123863 is an equidigital number, since it uses as much as digits as its factorization.

123863 is an evil number, because the sum of its binary digits is even.

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

The square root of 123863 is about 351.9417565450. The cubic root of 123863 is about 49.8479380118.

The spelling of 123863 in words is "one hundred twenty-three thousand, eight hundred sixty-three".