863423503 has 2 divisors, whose sum is σ = 863423504. Its totient is φ = 863423502.

The previous prime is 863423497. The next prime is 863423513. The reversal of 863423503 is 305324368.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 863423503 - 2⁵ = 863423471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (863423513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 431711751 + 431711752.

It is an arithmetic number, because the mean of its divisors is an integer number (431711752).

Almost surely, 2^863423503 is an apocalyptic number.

863423503 is a deficient number, since it is larger than the sum of its proper divisors (1).

863423503 is an equidigital number, since it uses as much as digits as its factorization.

863423503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 863423503 is about 29384.0688639269. The cubic root of 863423503 is about 952.2287479499.

The spelling of 863423503 in words is "eight hundred sixty-three million, four hundred twenty-three thousand, five hundred three".