20321113320 has 96 divisors (see below), whose sum is σ = 69519621600. Its totient is φ = 5133753216.

The previous prime is 20321113289. The next prime is 20321113411. The reversal of 20321113320 is 2331112302.

20321113320 is a `hidden beast` number, since 2 + 0 + 321 + 11 + 332 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20321113293 and 20321113302.

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 23 ways as a sum of consecutive naturals, for example, 1478622 + ... + 1492301.

It is an arithmetic number, because the mean of its divisors is an integer number (724162725).

Almost surely, 2^20321113320 is an apocalyptic number.

20321113320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321113320 is an abundant number, since it is smaller than the sum of its proper divisors (49198508280).

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

20321113320 is a wasteful number, since it uses less digits than its factorization.

20321113320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970959 (or 2970952 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20321113320 its reverse (2331112302), we get a palindrome (22652225622).

The spelling of 20321113320 in words is "twenty billion, three hundred twenty-one million, one hundred thirteen thousand, three hundred twenty".