20331000320 has 80 divisors (see below), whose sum is σ = 50319422208. Its totient is φ = 7870033920.

The previous prime is 20331000317. The next prime is 20331000329. The reversal of 20331000320 is 2300013302.

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

It is a junction number, because it is equal to n+sod(n) for n = 20331000295 and 20331000304.

It is not an unprimeable number, because it can be changed into a prime (20331000329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48734 + ... + 207453.

Almost surely, 2^20331000320 is an apocalyptic number.

20331000320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331000320 is an abundant number, since it is smaller than the sum of its proper divisors (29988421888).

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

20331000320 is an equidigital number, since it uses as much as digits as its factorization.

20331000320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256241 (or 256225 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 14.

Adding to 20331000320 its reverse (2300013302), we get a palindrome (22631013622).

The spelling of 20331000320 in words is "twenty billion, three hundred thirty-one million, three hundred twenty", and thus it is an aban number.