423321440303 has 2 divisors, whose sum is σ = 423321440304. Its totient is φ = 423321440302.

The previous prime is 423321440293. The next prime is 423321440309. The reversal of 423321440303 is 303044123324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 423321440303 - 2²⁰ = 423320391727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423321440309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211660720151 + 211660720152.

It is an arithmetic number, because the mean of its divisors is an integer number (211660720152).

Almost surely, 2^423321440303 is an apocalyptic number.

423321440303 is a deficient number, since it is larger than the sum of its proper divisors (1).

423321440303 is an equidigital number, since it uses as much as digits as its factorization.

423321440303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 423321440303 its reverse (303044123324), we get a palindrome (726365563627).

The spelling of 423321440303 in words is "four hundred twenty-three billion, three hundred twenty-one million, four hundred forty thousand, three hundred three".