203434040 has 32 divisors (see below), whose sum is σ = 461080080. Its totient is φ = 80777472.

The previous prime is 203434031. The next prime is 203434081. The reversal of 203434040 is 40434302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13082 + ... + 24041.

Almost surely, 2^203434040 is an apocalyptic number.

203434040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203434040 is an abundant number, since it is smaller than the sum of its proper divisors (257646040).

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

203434040 is a wasteful number, since it uses less digits than its factorization.

203434040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37271 (or 37267 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 203434040 is about 14263.0305335157. The cubic root of 203434040 is about 588.1316363465.

Adding to 203434040 its reverse (40434302), we get a palindrome (243868342).

The spelling of 203434040 in words is "two hundred three million, four hundred thirty-four thousand, forty".