203311434204 has 18 divisors (see below), whose sum is σ = 513926125440. Its totient is φ = 67770478056.

The previous prime is 203311434167. The next prime is 203311434233. The reversal of 203311434204 is 402434113302.

203311434204 is a `hidden beast` number, since 2 + 0 + 3 + 311 + 4 + 342 + 0 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×203311434204² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2823769884 + ... + 2823769955.

Almost surely, 2^203311434204 is an apocalyptic number.

It is an amenable number.

203311434204 is an abundant number, since it is smaller than the sum of its proper divisors (310614691236).

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

203311434204 is a wasteful number, since it uses less digits than its factorization.

203311434204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647539849 (or 5647539844 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 203311434204 its reverse (402434113302), we get a palindrome (605745547506).

The spelling of 203311434204 in words is "two hundred three billion, three hundred eleven million, four hundred thirty-four thousand, two hundred four".