20001031300 has 72 divisors (see below), whose sum is σ = 43865803520. Its totient is φ = 7915190400.

The previous prime is 20001031249. The next prime is 20001031319. The reversal of 20001031300 is 313010002.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12763117 + ... + 12764683.

Almost surely, 2^20001031300 is an apocalyptic number.

20001031300 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 20001031300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21932901760).

20001031300 is an abundant number, since it is smaller than the sum of its proper divisors (23864772220).

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

20001031300 is a wasteful number, since it uses less digits than its factorization.

20001031300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2861 (or 2854 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 20001031300 its reverse (313010002), we get a palindrome (20314041302).

The spelling of 20001031300 in words is "twenty billion, one million, thirty-one thousand, three hundred".