203431104 has 42 divisors (see below), whose sum is σ = 583100180. Its totient is φ = 67810176.

The previous prime is 203431103. The next prime is 203431121. The reversal of 203431104 is 401134302.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (203431103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176014 + ... + 177165.

Almost surely, 2^203431104 is an apocalyptic number.

203431104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203431104 is an abundant number, since it is smaller than the sum of its proper divisors (379669076).

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

203431104 is a wasteful number, since it uses less digits than its factorization.

203431104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353197 (or 353184 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 203431104 is about 14262.9276097160. The cubic root of 203431104 is about 588.1288069891.

Adding to 203431104 its reverse (401134302), we get a palindrome (604565406).

The spelling of 203431104 in words is "two hundred three million, four hundred thirty-one thousand, one hundred four".