20321131300 has 36 divisors (see below), whose sum is σ = 44819767636. Its totient is φ = 7995196800.

The previous prime is 20321131297. The next prime is 20321131301. The reversal of 20321131300 is 313112302.

It can be written as a sum of positive squares in 6 ways, for example, as 9791498304 + 10529632996 = 98952^2 + 102614^2 .

It is not an unprimeable number, because it can be changed into a prime (20321131301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1659567 + ... + 1671766.

Almost surely, 2^20321131300 is an apocalyptic number.

20321131300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321131300 is an abundant number, since it is smaller than the sum of its proper divisors (24498636336).

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

20321131300 is a wasteful number, since it uses less digits than its factorization.

20321131300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331408 (or 3331401 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20321131300 its reverse (313112302), we get a palindrome (20634243602).

The spelling of 20321131300 in words is "twenty billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred".