20031132100 has 144 divisors (see below), whose sum is σ = 51311715840. Its totient is φ = 6645196800.

The previous prime is 20031132089. The next prime is 20031132131. The reversal of 20031132100 is 123113002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2924680 + ... + 2931520.

It is an arithmetic number, because the mean of its divisors is an integer number (356331360).

Almost surely, 2^20031132100 is an apocalyptic number.

20031132100 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 20031132100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25655857920).

20031132100 is an abundant number, since it is smaller than the sum of its proper divisors (31280583740).

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

20031132100 is a wasteful number, since it uses less digits than its factorization.

20031132100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998 (or 6991 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20031132100 its reverse (123113002), we get a palindrome (20154245102).

The spelling of 20031132100 in words is "twenty billion, thirty-one million, one hundred thirty-two thousand, one hundred".