20322013312 has 64 divisors (see below), whose sum is σ = 43200223200. Its totient is φ = 9494267904.

The previous prime is 20322013307. The next prime is 20322013319. The reversal of 20322013312 is 21331022302.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 20322013312.

It is not an unprimeable number, because it can be changed into a prime (20322013319) by changing a digit.

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, 120303 + ... + 234769.

Almost surely, 2^20322013312 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 20322013312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21600111600).

20322013312 is an abundant number, since it is smaller than the sum of its proper divisors (22878209888).

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

20322013312 is a wasteful number, since it uses less digits than its factorization.

20322013312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114573 (or 114561 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 20322013312 its reverse (21331022302), we get a palindrome (41653035614).

The spelling of 20322013312 in words is "twenty billion, three hundred twenty-two million, thirteen thousand, three hundred twelve".