204100431020 has 12 divisors (see below), whose sum is σ = 428610905184. Its totient is φ = 81640172400.

The previous prime is 204100431011. The next prime is 204100431103. The reversal of 204100431020 is 20134001402.

It is a self number, because there is not a number n which added to its sum of digits gives 204100431020.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102510756 + ... + 5102510795.

It is an arithmetic number, because the mean of its divisors is an integer number (35717575432).

Almost surely, 2^204100431020 is an apocalyptic number.

204100431020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204100431020 is an abundant number, since it is smaller than the sum of its proper divisors (224510474164).

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

204100431020 is a wasteful number, since it uses less digits than its factorization.

204100431020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205021560 (or 10205021558 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 204100431020 its reverse (20134001402), we get a palindrome (224234432422).

The spelling of 204100431020 in words is "two hundred four billion, one hundred million, four hundred thirty-one thousand, twenty".