203030302020 has 384 divisors, whose sum is σ = 733907091456. Its totient is φ = 40790697984.

The previous prime is 203030301977. The next prime is 203030302037. The reversal of 203030302020 is 20203030302.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 127 ways as a sum of consecutive naturals, for example, 9484249 + ... + 9505631.

It is an arithmetic number, because the mean of its divisors is an integer number (1911216384).

Almost surely, 2^203030302020 is an apocalyptic number.

203030302020 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 203030302020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366953545728).

203030302020 is an abundant number, since it is smaller than the sum of its proper divisors (530876789436).

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

203030302020 is a wasteful number, since it uses less digits than its factorization.

203030302020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21499 (or 21497 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 15.

Adding to 203030302020 its reverse (20203030302), we get a palindrome (223233332322).

The spelling of 203030302020 in words is "two hundred three billion, thirty million, three hundred two thousand, twenty".