203040100 has 36 divisors (see below), whose sum is σ = 441573300. Its totient is φ = 81036160.

The previous prime is 203040091. The next prime is 203040121. The reversal of 203040100 is 1040302.

It can be written as a sum of positive squares in 6 ways, for example, as 34596 + 203005504 = 186^2 + 14248^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 48906 + ... + 52894.

It is an arithmetic number, because the mean of its divisors is an integer number (12265925).

Almost surely, 2^203040100 is an apocalyptic number.

203040100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203040100 is an abundant number, since it is smaller than the sum of its proper divisors (238533200).

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

203040100 is a wasteful number, since it uses less digits than its factorization.

203040100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512 (or 4505 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 203040100 is about 14249.2140134114. The cubic root of 203040100 is about 587.7517617213.

Adding to 203040100 its reverse (1040302), we get a palindrome (204080402).

The spelling of 203040100 in words is "two hundred three million, forty thousand, one hundred".