20131002200 has 96 divisors (see below), whose sum is σ = 49656933360. Its totient is φ = 7563571200.

The previous prime is 20131002197. The next prime is 20131002233. The reversal of 20131002200 is 220013102.

It is a happy number.

It is a congruent number.

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, 1772540 + ... + 1783860.

Almost surely, 2^20131002200 is an apocalyptic number.

20131002200 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 20131002200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24828466680).

20131002200 is an abundant number, since it is smaller than the sum of its proper divisors (29525931160).

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

20131002200 is a wasteful number, since it uses less digits than its factorization.

20131002200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11877 (or 11868 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 20131002200 its reverse (220013102), we get a palindrome (20351015302).

The spelling of 20131002200 in words is "twenty billion, one hundred thirty-one million, two thousand, two hundred".