20123031000100 has 288 divisors, whose sum is σ = 51019364162816. Its totient is φ = 6746718873600.

The previous prime is 20123031000089. The next prime is 20123031000101. The reversal of 20123031000100 is 100013032102.

It is not an unprimeable number, because it can be changed into a prime (20123031000101) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 6185990074 + ... + 6185993326.

Almost surely, 2^{20123031000100} is an apocalyptic number.

20123031000100 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 20123031000100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25509682081408).

20123031000100 is an abundant number, since it is smaller than the sum of its proper divisors (30896333162716).

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

20123031000100 is a wasteful number, since it uses less digits than its factorization.

20123031000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4135 (or 4128 counting only the distinct ones).

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

Adding to 20123031000100 its reverse (100013032102), we get a palindrome (20223044032202).

The spelling of 20123031000100 in words is "twenty trillion, one hundred twenty-three billion, thirty-one million, one hundred", and thus it is an aban number.