20103030020 has 12 divisors (see below), whose sum is σ = 42216363084. Its totient is φ = 8041212000.

The previous prime is 20103029987. The next prime is 20103030041. The reversal of 20103030020 is 2003030102.

It can be written as a sum of positive squares in 2 ways, for example, as 15789430336 + 4313599684 = 125656^2 + 65678^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20103029983 and 20103030010.

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 3 ways as a sum of consecutive naturals, for example, 502575731 + ... + 502575770.

It is an arithmetic number, because the mean of its divisors is an integer number (3518030257).

Almost surely, 2^20103030020 is an apocalyptic number.

20103030020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103030020 is an abundant number, since it is smaller than the sum of its proper divisors (22113333064).

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

20103030020 is a wasteful number, since it uses less digits than its factorization.

20103030020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005151510 (or 1005151508 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 11.

Adding to 20103030020 its reverse (2003030102), we get a palindrome (22106060122).

The spelling of 20103030020 in words is "twenty billion, one hundred three million, thirty thousand, twenty".