20031300220 has 36 divisors (see below), whose sum is σ = 42195709080. Its totient is φ = 7987838208.

The previous prime is 20031300173. The next prime is 20031300257. The reversal of 20031300220 is 2200313002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20031300220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2266971 + ... + 2275789.

It is an arithmetic number, because the mean of its divisors is an integer number (1172103030).

Almost surely, 2^20031300220 is an apocalyptic number.

20031300220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20031300220 is an abundant number, since it is smaller than the sum of its proper divisors (22164408860).

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

20031300220 is an equidigital number, since it uses as much as digits as its factorization.

20031300220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9502 (or 9163 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20031300220 its reverse (2200313002), we get a palindrome (22231613222).

The spelling of 20031300220 in words is "twenty billion, thirty-one million, three hundred thousand, two hundred twenty".