203130042231 has 4 divisors (see below), whose sum is σ = 270840056312. Its totient is φ = 135420028152.

The previous prime is 203130042223. The next prime is 203130042251. The reversal of 203130042231 is 132240031302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203130042231 - 2³ = 203130042223 is a prime.

It is a super-2 number, since 2×203130042231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203130042198 and 203130042207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203130042251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33855007036 + ... + 33855007041.

It is an arithmetic number, because the mean of its divisors is an integer number (67710014078).

Almost surely, 2^203130042231 is an apocalyptic number.

203130042231 is a deficient number, since it is larger than the sum of its proper divisors (67710014081).

203130042231 is an equidigital number, since it uses as much as digits as its factorization.

203130042231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67710014080.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 203130042231 its reverse (132240031302), we get a palindrome (335370073533).

The spelling of 203130042231 in words is "two hundred three billion, one hundred thirty million, forty-two thousand, two hundred thirty-one".