100431256220 has 48 divisors (see below), whose sum is σ = 213153927168. Its totient is φ = 39744993600.

The previous prime is 100431256213. The next prime is 100431256253. The reversal of 100431256220 is 22652134001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 100431256220.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2216795 + ... + 2261645.

It is an arithmetic number, because the mean of its divisors is an integer number (4440706816).

Almost surely, 2^100431256220 is an apocalyptic number.

100431256220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100431256220 is an abundant number, since it is smaller than the sum of its proper divisors (112722670948).

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

100431256220 is a wasteful number, since it uses less digits than its factorization.

100431256220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46050 (or 46048 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 100431256220 in words is "one hundred billion, four hundred thirty-one million, two hundred fifty-six thousand, two hundred twenty".