203240001 has 32 divisors (see below), whose sum is σ = 286623360. Its totient is φ = 127954944.

The previous prime is 203239997. The next prime is 203240041. The reversal of 203240001 is 100042302.

It is not a de Polignac number, because 203240001 - 2² = 203239997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203240041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1052961 + ... + 1053153.

It is an arithmetic number, because the mean of its divisors is an integer number (8956980).

Almost surely, 2^203240001 is an apocalyptic number.

It is an amenable number.

203240001 is a deficient number, since it is larger than the sum of its proper divisors (83383359).

203240001 is a wasteful number, since it uses less digits than its factorization.

203240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465.

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 203240001 is about 14256.2267448298. The cubic root of 203240001 is about 587.9445867304.

Adding to 203240001 its reverse (100042302), we get a palindrome (303282303).

The spelling of 203240001 in words is "two hundred three million, two hundred forty thousand, one".