320203344432 has 160 divisors (see below), whose sum is σ = 848688680448. Its totient is φ = 104004200448.

The previous prime is 320203344407. The next prime is 320203344449. The reversal of 320203344432 is 234443302023.

It is a self number, because there is not a number n which added to its sum of digits gives 320203344432.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101232483 + ... + 101235645.

Almost surely, 2^320203344432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320203344432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424344340224).

320203344432 is an abundant number, since it is smaller than the sum of its proper divisors (528485336016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320203344432 is a wasteful number, since it uses less digits than its factorization.

320203344432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3587 (or 3581 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 30.

Adding to 320203344432 its reverse (234443302023), we get a palindrome (554646646455).

The spelling of 320203344432 in words is "three hundred twenty billion, two hundred three million, three hundred forty-four thousand, four hundred thirty-two".