20131023211300 has 18 divisors (see below), whose sum is σ = 43684320368738. Its totient is φ = 8052409284480.

The previous prime is 20131023211297. The next prime is 20131023211331. The reversal of 20131023211300 is 311232013102.

It can be written as a sum of positive squares in 3 ways, for example, as 59852643904 + 20071170567396 = 244648^2 + 4480086^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 100655115957 + ... + 100655116156.

Almost surely, 2^{20131023211300} is an apocalyptic number.

20131023211300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131023211300 is an abundant number, since it is smaller than the sum of its proper divisors (23553297157438).

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

20131023211300 is a wasteful number, since it uses less digits than its factorization.

20131023211300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201310232127 (or 201310232120 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20131023211300 its reverse (311232013102), we get a palindrome (20442255224402).

The spelling of 20131023211300 in words is "twenty trillion, one hundred thirty-one billion, twenty-three million, two hundred eleven thousand, three hundred".