100031032220 has 96 divisors (see below), whose sum is σ = 243203046912. Its totient is φ = 33851766528.

The previous prime is 100031032183. The next prime is 100031032261. The reversal of 100031032220 is 22230130001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 100031032195 and 100031032204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4137407 + ... + 4161513.

It is an arithmetic number, because the mean of its divisors is an integer number (2533365072).

Almost surely, 2^100031032220 is an apocalyptic number.

100031032220 is a gapful number since it is divisible by the number (10) 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 100031032220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121601523456).

100031032220 is an abundant number, since it is smaller than the sum of its proper divisors (143172014692).

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

100031032220 is a wasteful number, since it uses less digits than its factorization.

100031032220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24507 (or 24505 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 100031032220 its reverse (22230130001), we get a palindrome (122261162221).

The spelling of 100031032220 in words is "one hundred billion, thirty-one million, thirty-two thousand, two hundred twenty".