203430540 has 48 divisors (see below), whose sum is σ = 574947072. Its totient is φ = 53739456.

The previous prime is 203430533. The next prime is 203430553. The reversal of 203430540 is 45034302.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9424 + ... + 22263.

It is an arithmetic number, because the mean of its divisors is an integer number (11978064).

Almost surely, 2^203430540 is an apocalyptic number.

203430540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203430540 is an abundant number, since it is smaller than the sum of its proper divisors (371516532).

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

203430540 is a wasteful number, since it uses less digits than its factorization.

203430540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31806 (or 31804 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 203430540 is about 14262.9078381654. The cubic root of 203430540 is about 588.1282634718.

Adding to 203430540 its reverse (45034302), we get a palindrome (248464842).

The spelling of 203430540 in words is "two hundred three million, four hundred thirty thousand, five hundred forty".