431543231423 has 4 divisors (see below), whose sum is σ = 443206562040. Its totient is φ = 419879900808.

The previous prime is 431543231419. The next prime is 431543231443. The reversal of 431543231423 is 324132345134.

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 431543231423 - 2² = 431543231419 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 (431543231443) 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, 5831665253 + ... + 5831665326.

It is an arithmetic number, because the mean of its divisors is an integer number (110801640510).

Almost surely, 2^431543231423 is an apocalyptic number.

431543231423 is a deficient number, since it is larger than the sum of its proper divisors (11663330617).

431543231423 is a wasteful number, since it uses less digits than its factorization.

431543231423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11663330616.

The product of its digits is 103680, while the sum is 35.

Adding to 431543231423 its reverse (324132345134), we get a palindrome (755675576557).

The spelling of 431543231423 in words is "four hundred thirty-one billion, five hundred forty-three million, two hundred thirty-one thousand, four hundred twenty-three".