320231541650443 has 4 divisors (see below), whose sum is σ = 334154652157008. Its totient is φ = 306308431143880.

The previous prime is 320231541650431. The next prime is 320231541650459. The reversal of 320231541650443 is 344056145132023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320231541650443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 320231541650443.

It is not an unprimeable number, because it can be changed into a prime (320231541650743) 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, 6961555253248 + ... + 6961555253293.

It is an arithmetic number, because the mean of its divisors is an integer number (83538663039252).

Almost surely, 2^{320231541650443} is an apocalyptic number.

320231541650443 is a deficient number, since it is larger than the sum of its proper divisors (13923110506565).

320231541650443 is a wasteful number, since it uses less digits than its factorization.

320231541650443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13923110506564.

The product of its (nonzero) digits is 1036800, while the sum is 43.

Adding to 320231541650443 its reverse (344056145132023), we get a palindrome (664287686782466).

The spelling of 320231541650443 in words is "three hundred twenty trillion, two hundred thirty-one billion, five hundred forty-one million, six hundred fifty thousand, four hundred forty-three".