20203103320 has 64 divisors (see below), whose sum is σ = 46861092000. Its totient is φ = 7835378688.

The previous prime is 20203103299. The next prime is 20203103369. The reversal of 20203103320 is 2330130202.

It is a junction number, because it is equal to n+sod(n) for n = 20203103294 and 20203103303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113646 + ... + 230914.

Almost surely, 2^20203103320 is an apocalyptic number.

20203103320 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 20203103320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23430546000).

20203103320 is an abundant number, since it is smaller than the sum of its proper divisors (26657988680).

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

20203103320 is a wasteful number, since it uses less digits than its factorization.

20203103320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117412 (or 117408 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20203103320 its reverse (2330130202), we get a palindrome (22533233522).

The spelling of 20203103320 in words is "twenty billion, two hundred three million, one hundred three thousand, three hundred twenty".