20310330320 has 80 divisors (see below), whose sum is σ = 56313895680. Its totient is φ = 6660774912.

The previous prime is 20310330311. The next prime is 20310330323. The reversal of 20310330320 is 2303301302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×20310330320² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310330323) 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, 775565 + ... + 801324.

It is an arithmetic number, because the mean of its divisors is an integer number (703923696).

Almost surely, 2^20310330320 is an apocalyptic number.

20310330320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20310330320 is an abundant number, since it is smaller than the sum of its proper divisors (36003565360).

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

20310330320 is a wasteful number, since it uses less digits than its factorization.

20310330320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1576932 (or 1576926 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20310330320 its reverse (2303301302), we get a palindrome (22613631622).

The spelling of 20310330320 in words is "twenty billion, three hundred ten million, three hundred thirty thousand, three hundred twenty".