431234543443 has 4 divisors (see below), whose sum is σ = 470437683768. Its totient is φ = 392031403120.

The previous prime is 431234543429. The next prime is 431234543521. The reversal of 431234543443 is 344345432134.

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 431234543443 - 2²¹ = 431232446291 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431234543396 and 431234543405.

It is not an unprimeable number, because it can be changed into a prime (431234543743) 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, 19601570146 + ... + 19601570167.

It is an arithmetic number, because the mean of its divisors is an integer number (117609420942).

Almost surely, 2^431234543443 is an apocalyptic number.

431234543443 is a deficient number, since it is larger than the sum of its proper divisors (39203140325).

431234543443 is a wasteful number, since it uses less digits than its factorization.

431234543443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39203140324.

The product of its digits is 829440, while the sum is 40.

Adding to 431234543443 its reverse (344345432134), we get a palindrome (775579975577).

The spelling of 431234543443 in words is "four hundred thirty-one billion, two hundred thirty-four million, five hundred forty-three thousand, four hundred forty-three".