203000320000 has 260 divisors, whose sum is σ = 511261906320. Its totient is φ = 80564224000.

The previous prime is 203000319983. The next prime is 203000320007. The reversal of 203000320000 is 23000302.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (203000320007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 458239779 + ... + 458240221.

Almost surely, 2^203000320000 is an apocalyptic number.

203000320000 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 203000320000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (255630953160).

203000320000 is an abundant number, since it is smaller than the sum of its proper divisors (308261586320).

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

203000320000 is an frugal number, since it uses more digits than its factorization.

203000320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666 (or 629 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 10.

Adding to 203000320000 its reverse (23000302), we get a palindrome (203023320302).

The spelling of 203000320000 in words is "two hundred three billion, three hundred twenty thousand".