203213404 has 12 divisors (see below), whose sum is σ = 357806344. Its totient is φ = 100983024.

The previous prime is 203213389. The next prime is 203213407. The reversal of 203213404 is 404312302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203213407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155187 + ... + 156490.

Almost surely, 2^203213404 is an apocalyptic number.

It is an amenable number.

203213404 is a deficient number, since it is larger than the sum of its proper divisors (154592940).

203213404 is a wasteful number, since it uses less digits than its factorization.

203213404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311844 (or 311842 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 203213404 is about 14255.2938938487. The cubic root of 203213404 is about 587.9189384914.

Adding to 203213404 its reverse (404312302), we get a palindrome (607525706).

The spelling of 203213404 in words is "two hundred three million, two hundred thirteen thousand, four hundred four".