204305306136 has 32 divisors (see below), whose sum is σ = 510949230000. Its totient is φ = 68076973440.

The previous prime is 204305306071. The next prime is 204305306137. The reversal of 204305306136 is 631603503402.

It is a junction number, because it is equal to n+sod(n) for n = 204305306097 and 204305306106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204305306137) 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 7 ways as a sum of consecutive naturals, for example, 1482355 + ... + 1614306.

Almost surely, 2^204305306136 is an apocalyptic number.

It is an amenable number.

204305306136 is an abundant number, since it is smaller than the sum of its proper divisors (306643923864).

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

204305306136 is a wasteful number, since it uses less digits than its factorization.

204305306136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3099419 (or 3099415 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 33.

Adding to 204305306136 its reverse (631603503402), we get a palindrome (835908809538).

The spelling of 204305306136 in words is "two hundred four billion, three hundred five million, three hundred six thousand, one hundred thirty-six".