20003301231320 has 128 divisors (see below), whose sum is σ = 49174535592000. Its totient is φ = 7262744985600.

The previous prime is 20003301231257. The next prime is 20003301231337. The reversal of 20003301231320 is 2313210330002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20003301231292 and 20003301231301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1465543856 + ... + 1465557504.

Almost surely, 2^{20003301231320} is an apocalyptic number.

20003301231320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003301231320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24587267796000).

20003301231320 is an abundant number, since it is smaller than the sum of its proper divisors (29171234360680).

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

20003301231320 is a wasteful number, since it uses less digits than its factorization.

20003301231320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18549 (or 18545 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20003301231320 its reverse (2313210330002), we get a palindrome (22316511561322).

The spelling of 20003301231320 in words is "twenty trillion, three billion, three hundred one million, two hundred thirty-one thousand, three hundred twenty".