203130121 has 8 divisors (see below), whose sum is σ = 213955200. Its totient is φ = 192318480.

The previous prime is 203130107. The next prime is 203130139. The reversal of 203130121 is 121031302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203130121 - 2⁹ = 203129609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203130101) 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 7 ways as a sum of consecutive naturals, for example, 47760 + ... + 51838.

It is an arithmetic number, because the mean of its divisors is an integer number (26744400).

Almost surely, 2^203130121 is an apocalyptic number.

It is an amenable number.

203130121 is a deficient number, since it is larger than the sum of its proper divisors (10825079).

203130121 is a wasteful number, since it uses less digits than its factorization.

203130121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6719.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 203130121 is about 14252.3724691716. The cubic root of 203130121 is about 587.8386118620.

Adding to 203130121 its reverse (121031302), we get a palindrome (324161423).

The spelling of 203130121 in words is "two hundred three million, one hundred thirty thousand, one hundred twenty-one".