203110252991 has 2 divisors, whose sum is σ = 203110252992. Its totient is φ = 203110252990.

The previous prime is 203110252987. The next prime is 203110253039. The reversal of 203110252991 is 199252011302.

203110252991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203110252991 - 2² = 203110252987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203110252981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101555126495 + 101555126496.

It is an arithmetic number, because the mean of its divisors is an integer number (101555126496).

Almost surely, 2^203110252991 is an apocalyptic number.

203110252991 is a deficient number, since it is larger than the sum of its proper divisors (1).

203110252991 is an equidigital number, since it uses as much as digits as its factorization.

203110252991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The spelling of 203110252991 in words is "two hundred three billion, one hundred ten million, two hundred fifty-two thousand, nine hundred ninety-one".