100131233220 has 72 divisors (see below), whose sum is σ = 304100911296. Its totient is φ = 26669178432.

The previous prime is 100131233219. The next prime is 100131233227. The reversal of 100131233220 is 22332131001.

100131233220 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 312 + 332 + 20 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 100131233193 and 100131233202.

It is not an unprimeable number, because it can be changed into a prime (100131233227) 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 23 ways as a sum of consecutive naturals, for example, 189822 + ... + 486101.

It is an arithmetic number, because the mean of its divisors is an integer number (4223623768).

Almost surely, 2^100131233220 is an apocalyptic number.

100131233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100131233220 is an abundant number, since it is smaller than the sum of its proper divisors (203969678076).

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

100131233220 is a wasteful number, since it uses less digits than its factorization.

100131233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676761 (or 676756 counting only the distinct ones).

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

Adding to 100131233220 its reverse (22332131001), we get a palindrome (122463364221).

The spelling of 100131233220 in words is "one hundred billion, one hundred thirty-one million, two hundred thirty-three thousand, two hundred twenty".