203220243320 has 256 divisors, whose sum is σ = 533985177600. Its totient is φ = 69085716480.

The previous prime is 203220243287. The next prime is 203220243409. The reversal of 203220243320 is 23342022302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26831054 + ... + 26838626.

It is an arithmetic number, because the mean of its divisors is an integer number (2085879600).

Almost surely, 2^203220243320 is an apocalyptic number.

203220243320 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 203220243320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266992588800).

203220243320 is an abundant number, since it is smaller than the sum of its proper divisors (330764934280).

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

203220243320 is a wasteful number, since it uses less digits than its factorization.

203220243320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718 (or 7714 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

Adding to 203220243320 its reverse (23342022302), we get a palindrome (226562265622).

The spelling of 203220243320 in words is "two hundred three billion, two hundred twenty million, two hundred forty-three thousand, three hundred twenty".