203404 has 12 divisors (see below), whose sum is σ = 359128. Its totient is φ = 100800.

The previous prime is 203393. The next prime is 203417. The reversal of 203404 is 404302.

203404 is nontrivially palindromic in base 15.

It is a hoax number, since the sum of its digits (13) coincides with the sum of the digits of its distinct prime factors.

203404 is an undulating number in base 15.

It is a nialpdrome in base 12.

It is a congruent number.

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, 724 + ... + 964.

2²⁰³⁴⁰⁴ is an apocalyptic number.

It is an amenable number.

203404 is a deficient number, since it is larger than the sum of its proper divisors (155724).

203404 is a wasteful number, since it uses less digits than its factorization.

203404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 203404 is about 451.0033259301. The cubic root of 203404 is about 58.8102686186.

Adding to 203404 its reverse (404302), we get a palindrome (607706).

The spelling of 203404 in words is "two hundred three thousand, four hundred four", and thus it is an iban number.