203040330 has 32 divisors (see below), whose sum is σ = 495289728. Its totient is φ = 53256000.

The previous prime is 203040317. The next prime is 203040347. The reversal of 203040330 is 33040302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53646 + ... + 57305.

It is an arithmetic number, because the mean of its divisors is an integer number (15477804).

Almost surely, 2^203040330 is an apocalyptic number.

203040330 is an abundant number, since it is smaller than the sum of its proper divisors (292249398).

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

203040330 is a wasteful number, since it uses less digits than its factorization.

203040330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111022.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 203040330 is about 14249.2220840297. Note that the first 3 decimals coincide. The cubic root of 203040330 is about 587.7519836525.

Adding to 203040330 its reverse (33040302), we get a palindrome (236080632).

The spelling of 203040330 in words is "two hundred three million, forty thousand, three hundred thirty".