20310220032 has 72 divisors (see below), whose sum is σ = 54129077184. Its totient is φ = 6760771584.

The previous prime is 20310219929. The next prime is 20310220043. The reversal of 20310220032 is 23002201302.

It is a junction number, because it is equal to n+sod(n) for n = 20310219993 and 20310220020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 552828 + ... + 588420.

Almost surely, 2^20310220032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20310220032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27064538592).

20310220032 is an abundant number, since it is smaller than the sum of its proper divisors (33818857152).

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

20310220032 is an equidigital number, since it uses as much as digits as its factorization.

20310220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36355 (or 36341 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20310220032 its reverse (23002201302), we get a palindrome (43312421334).

The spelling of 20310220032 in words is "twenty billion, three hundred ten million, two hundred twenty thousand, thirty-two".