423402031423 has 4 divisors (see below), whose sum is σ = 483888035920. Its totient is φ = 362916026928.

The previous prime is 423402031391. The next prime is 423402031441. The reversal of 423402031423 is 324130204324.

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

It is not a de Polignac number, because 423402031423 - 2⁵ = 423402031391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 423402031391 and 423402031400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423402031223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30243002238 + ... + 30243002251.

It is an arithmetic number, because the mean of its divisors is an integer number (120972008980).

Almost surely, 2^423402031423 is an apocalyptic number.

423402031423 is a deficient number, since it is larger than the sum of its proper divisors (60486004497).

423402031423 is an equidigital number, since it uses as much as digits as its factorization.

423402031423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60486004496.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 423402031423 its reverse (324130204324), we get a palindrome (747532235747).

The spelling of 423402031423 in words is "four hundred twenty-three billion, four hundred two million, thirty-one thousand, four hundred twenty-three".