321203341320443 has 16 divisors (see below), whose sum is σ = 330488743049760. Its totient is φ = 311949945156096.

The previous prime is 321203341320413. The next prime is 321203341320487. The reversal of 321203341320443 is 344023143302123.

It is a cyclic number.

It is not a de Polignac number, because 321203341320443 - 2³² = 321199046353147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321203341320413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112195496 + ... + 115022762.

It is an arithmetic number, because the mean of its divisors is an integer number (20655546440610).

Almost surely, 2^{321203341320443} is an apocalyptic number.

321203341320443 is a deficient number, since it is larger than the sum of its proper divisors (9285401729317).

321203341320443 is a wasteful number, since it uses less digits than its factorization.

321203341320443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2832926.

The product of its (nonzero) digits is 124416, while the sum is 35.

Adding to 321203341320443 its reverse (344023143302123), we get a palindrome (665226484622566).

The spelling of 321203341320443 in words is "three hundred twenty-one trillion, two hundred three billion, three hundred forty-one million, three hundred twenty thousand, four hundred forty-three".