20301312032 has 48 divisors (see below), whose sum is σ = 40966144632. Its totient is φ = 9897492480.

The previous prime is 20301312013. The next prime is 20301312061. The reversal of 20301312032 is 23021310302.

It can be written as a sum of positive squares in 4 ways, for example, as 19464714256 + 836597776 = 139516^2 + 28924^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20301312032.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3241448 + ... + 3247704.

Almost surely, 2^20301312032 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 20301312032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20483072316).

20301312032 is an abundant number, since it is smaller than the sum of its proper divisors (20664832600).

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

20301312032 is a wasteful number, since it uses less digits than its factorization.

20301312032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781 (or 8773 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20301312032 its reverse (23021310302), we get a palindrome (43322622334).

The spelling of 20301312032 in words is "twenty billion, three hundred one million, three hundred twelve thousand, thirty-two".