20131323200100 has 108 divisors (see below), whose sum is σ = 72114873352704. Its totient is φ = 4601445301440.

The previous prime is 20131323200057. The next prime is 20131323200101. The reversal of 20131323200100 is 100232313102.

20131323200100 is a `hidden beast` number, since 2 + 0 + 131 + 323 + 200 + 10 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20131323200101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1597717764 + ... + 1597730363.

Almost surely, 2^{20131323200100} is an apocalyptic number.

20131323200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131323200100 is an abundant number, since it is smaller than the sum of its proper divisors (51983550152604).

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

20131323200100 is a wasteful number, since it uses less digits than its factorization.

20131323200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195448154 (or 3195448144 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20131323200100 its reverse (100232313102), we get a palindrome (20231555513202).

The spelling of 20131323200100 in words is "twenty trillion, one hundred thirty-one billion, three hundred twenty-three million, two hundred thousand, one hundred".