100131000020 has 48 divisors (see below), whose sum is σ = 219506474880. Its totient is φ = 38295455616.

The previous prime is 100131000019. The next prime is 100131000031. The reversal of 100131000020 is 20000131001.

It is a junction number, because it is equal to n+sod(n) for n = 100130999971 and 100131000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1125074 + ... + 1210806.

It is an arithmetic number, because the mean of its divisors is an integer number (4573051560).

Almost surely, 2^100131000020 is an apocalyptic number.

100131000020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100131000020 is an abundant number, since it is smaller than the sum of its proper divisors (119375474860).

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

100131000020 is a wasteful number, since it uses less digits than its factorization.

100131000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88304 (or 88302 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 8.

Adding to 100131000020 its reverse (20000131001), we get a palindrome (120131131021).

The spelling of 100131000020 in words is "one hundred billion, one hundred thirty-one million, twenty", and thus it is an aban number.