423340431023 has 4 divisors (see below), whose sum is σ = 445621506360. Its totient is φ = 401059355688.

The previous prime is 423340431001. The next prime is 423340431079. The reversal of 423340431023 is 320134043324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 423340431023 - 2³⁰ = 422266689199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423340431223) 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 in 3 ways as a sum of consecutive naturals, for example, 11140537640 + ... + 11140537677.

It is an arithmetic number, because the mean of its divisors is an integer number (111405376590).

Almost surely, 2^423340431023 is an apocalyptic number.

423340431023 is a deficient number, since it is larger than the sum of its proper divisors (22281075337).

423340431023 is a wasteful number, since it uses less digits than its factorization.

423340431023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22281075336.

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

Adding to 423340431023 its reverse (320134043324), we get a palindrome (743474474347).

The spelling of 423340431023 in words is "four hundred twenty-three billion, three hundred forty million, four hundred thirty-one thousand, twenty-three".