204430310120 has 64 divisors (see below), whose sum is σ = 488783814480. Its totient is φ = 76684087296.

The previous prime is 204430310107. The next prime is 204430310159. The reversal of 204430310120 is 21013034402.

It can be written as a sum of positive squares in 8 ways, for example, as 114321076996 + 90109233124 = 338114^2 + 300182^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 204430310092 and 204430310101.

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, 354299 + ... + 731018.

Almost surely, 2^204430310120 is an apocalyptic number.

204430310120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204430310120 is an abundant number, since it is smaller than the sum of its proper divisors (284353504360).

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

204430310120 is a wasteful number, since it uses less digits than its factorization.

204430310120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085622 (or 1085618 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 204430310120 its reverse (21013034402), we get a palindrome (225443344522).

The spelling of 204430310120 in words is "two hundred four billion, four hundred thirty million, three hundred ten thousand, one hundred twenty".