203130122231 has 4 divisors (see below), whose sum is σ = 203148178272. Its totient is φ = 203112066192.

The previous prime is 203130122201. The next prime is 203130122263. The reversal of 203130122231 is 132221031302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132221031302 = 2 ⋅66110515651.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203130122231 is a prime.

It is a super-3 number, since 3×203130122231³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130122201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9011135 + ... + 9033648.

It is an arithmetic number, because the mean of its divisors is an integer number (50787044568).

Almost surely, 2^203130122231 is an apocalyptic number.

203130122231 is a deficient number, since it is larger than the sum of its proper divisors (18056041).

203130122231 is a wasteful number, since it uses less digits than its factorization.

203130122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18056040.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203130122231 its reverse (132221031302), we get a palindrome (335351153533).

The spelling of 203130122231 in words is "two hundred three billion, one hundred thirty million, one hundred twenty-two thousand, two hundred thirty-one".