203030001 has 12 divisors (see below), whose sum is σ = 293933328. Its totient is φ = 135045144.

The previous prime is 203029927. The next prime is 203030057. The reversal of 203030001 is 100030302.

It is a happy number.

It is not a de Polignac number, because 203030001 - 2⁷ = 203029873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (203030071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21475 + ... + 29448.

It is an arithmetic number, because the mean of its divisors is an integer number (24494444).

Almost surely, 2^203030001 is an apocalyptic number.

It is an amenable number.

203030001 is a deficient number, since it is larger than the sum of its proper divisors (90903327).

203030001 is a wasteful number, since it uses less digits than its factorization.

203030001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51372 (or 51369 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 203030001 is about 14248.8596385816. The cubic root of 203030001 is about 587.7420168425.

Adding to 203030001 its reverse (100030302), we get a palindrome (303060303).

The spelling of 203030001 in words is "two hundred three million, thirty thousand, one".