423003443 has 2 divisors, whose sum is σ = 423003444. Its totient is φ = 423003442.

The previous prime is 423003433. The next prime is 423003457. The reversal of 423003443 is 344300324.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423003443 is a prime.

It is not a weakly prime, because it can be changed into another prime (423003433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211501721 + 211501722.

It is an arithmetic number, because the mean of its divisors is an integer number (211501722).

Almost surely, 2^423003443 is an apocalyptic number.

423003443 is a deficient number, since it is larger than the sum of its proper divisors (1).

423003443 is an equidigital number, since it uses as much as digits as its factorization.

423003443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 423003443 is about 20567.0475032271. The cubic root of 423003443 is about 750.6681116220.

Adding to 423003443 its reverse (344300324), we get a palindrome (767303767).

The spelling of 423003443 in words is "four hundred twenty-three million, three thousand, four hundred forty-three".