20131330000 has 100 divisors (see below), whose sum is σ = 50058179380. Its totient is φ = 7834752000.

The previous prime is 20131329979. The next prime is 20131330013. The reversal of 20131330000 is 3313102.

It can be written as a sum of positive squares in 10 ways, for example, as 14792397376 + 5338932624 = 121624^2 + 73068^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 342796 + ... + 397204.

Almost surely, 2^20131330000 is an apocalyptic number.

20131330000 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 20131330000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25029089690).

20131330000 is an abundant number, since it is smaller than the sum of its proper divisors (29926849380).

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

20131330000 is an equidigital number, since it uses as much as digits as its factorization.

20131330000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54474 (or 54453 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

Adding to 20131330000 its reverse (3313102), we get a palindrome (20134643102).

The spelling of 20131330000 in words is "twenty billion, one hundred thirty-one million, three hundred thirty thousand".