20302321320 has 96 divisors (see below), whose sum is σ = 66004567200. Its totient is φ = 5412145536.

The previous prime is 20302321297. The next prime is 20302321327. The reversal of 20302321320 is 2312320302.

It is a happy number.

20302321320 is a `hidden beast` number, since 20 + 3 + 0 + 2 + 321 + 320 = 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 = 20302321293 and 20302321302.

It is not an unprimeable number, because it can be changed into a prime (20302321327) 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 23 ways as a sum of consecutive naturals, for example, 1338499 + ... + 1353581.

It is an arithmetic number, because the mean of its divisors is an integer number (687547575).

Almost surely, 2^20302321320 is an apocalyptic number.

20302321320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20302321320 is an abundant number, since it is smaller than the sum of its proper divisors (45702245880).

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

20302321320 is a wasteful number, since it uses less digits than its factorization.

20302321320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18839 (or 18832 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20302321320 its reverse (2312320302), we get a palindrome (22614641622).

The spelling of 20302321320 in words is "twenty billion, three hundred two million, three hundred twenty-one thousand, three hundred twenty".