203213424 has 20 divisors (see below), whose sum is σ = 524968136. Its totient is φ = 67737792.

The previous prime is 203213407. The next prime is 203213447. The reversal of 203213424 is 424312302.

It is a self number, because there is not a number n which added to its sum of digits gives 203213424.

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, 2116759 + ... + 2116854.

Almost surely, 2^203213424 is an apocalyptic number.

203213424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

203213424 is an abundant number, since it is smaller than the sum of its proper divisors (321754712).

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

203213424 is a wasteful number, since it uses less digits than its factorization.

203213424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4233624 (or 4233618 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 203213424 is about 14255.2945953425. The cubic root of 203213424 is about 587.9189577788.

Adding to 203213424 its reverse (424312302), we get a palindrome (627525726).

The spelling of 203213424 in words is "two hundred three million, two hundred thirteen thousand, four hundred twenty-four".