200321000320 has 160 divisors (see below), whose sum is σ = 558678832920. Its totient is φ = 68680958976.

The previous prime is 200321000263. The next prime is 200321000323. The reversal of 200321000320 is 23000123002.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (160).

It is a self number, because there is not a number n which added to its sum of digits gives 200321000320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200321000323) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 1471459 + ... + 1601821.

Almost surely, 2^200321000320 is an apocalyptic number.

200321000320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200321000320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279339416460).

200321000320 is an abundant number, since it is smaller than the sum of its proper divisors (358357832600).

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

200321000320 is an frugal number, since it uses more digits than its factorization.

200321000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130410 (or 130377 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 200321000320 its reverse (23000123002), we get a palindrome (223321123322).

The spelling of 200321000320 in words is "two hundred billion, three hundred twenty-one million, three hundred twenty", and thus it is an aban number.