423305143 has 2 divisors, whose sum is σ = 423305144. Its totient is φ = 423305142.

The previous prime is 423305101. The next prime is 423305153. The reversal of 423305143 is 341503324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423305143 - 2⁹ = 423304631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423305153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211652571 + 211652572.

It is an arithmetic number, because the mean of its divisors is an integer number (211652572).

Almost surely, 2^423305143 is an apocalyptic number.

423305143 is a deficient number, since it is larger than the sum of its proper divisors (1).

423305143 is an equidigital number, since it uses as much as digits as its factorization.

423305143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 423305143 is about 20574.3807440224. The cubic root of 423305143 is about 750.8465362904.

Adding to 423305143 its reverse (341503324), we get a palindrome (764808467).

The spelling of 423305143 in words is "four hundred twenty-three million, three hundred five thousand, one hundred forty-three".