20303001312 has 96 divisors (see below), whose sum is σ = 58225474944. Its totient is φ = 6143424000.

The previous prime is 20303001311. The next prime is 20303001317. The reversal of 20303001312 is 21310030302.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 20303001291 and 20303001300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303001311) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 726543 + ... + 753969.

It is an arithmetic number, because the mean of its divisors is an integer number (606515364).

Almost surely, 2^20303001312 is an apocalyptic number.

20303001312 is a gapful number since it is divisible by the number (22) 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 20303001312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29112737472).

20303001312 is an abundant number, since it is smaller than the sum of its proper divisors (37922473632).

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

20303001312 is a wasteful number, since it uses less digits than its factorization.

20303001312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28152 (or 28144 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20303001312 its reverse (21310030302), we get a palindrome (41613031614).

The spelling of 20303001312 in words is "twenty billion, three hundred three million, one thousand, three hundred twelve".