320344421143 has 4 divisors (see below), whose sum is σ = 339188210640. Its totient is φ = 301500631648.

The previous prime is 320344421123. The next prime is 320344421171. The reversal of 320344421143 is 341124443023.

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 320344421143 - 2³³ = 311754486551 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 (320344421123) 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, 9421894723 + ... + 9421894756.

It is an arithmetic number, because the mean of its divisors is an integer number (84797052660).

Almost surely, 2^320344421143 is an apocalyptic number.

320344421143 is a deficient number, since it is larger than the sum of its proper divisors (18843789497).

320344421143 is a wasteful number, since it uses less digits than its factorization.

320344421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18843789496.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 320344421143 its reverse (341124443023), we get a palindrome (661468864166).

The spelling of 320344421143 in words is "three hundred twenty billion, three hundred forty-four million, four hundred twenty-one thousand, one hundred forty-three".