203030231231 has 2 divisors, whose sum is σ = 203030231232. Its totient is φ = 203030231230.

The previous prime is 203030231113. The next prime is 203030231291. The reversal of 203030231231 is 132132030302.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203030231231 is a prime.

It is a super-2 number, since 2×203030231231² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203030231291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101515115615 + 101515115616.

It is an arithmetic number, because the mean of its divisors is an integer number (101515115616).

Almost surely, 2^203030231231 is an apocalyptic number.

203030231231 is a deficient number, since it is larger than the sum of its proper divisors (1).

203030231231 is an equidigital number, since it uses as much as digits as its factorization.

203030231231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203030231231 its reverse (132132030302), we get a palindrome (335162261533).

The spelling of 203030231231 in words is "two hundred three billion, thirty million, two hundred thirty-one thousand, two hundred thirty-one".