11131230251 has 2 divisors, whose sum is σ = 11131230252. Its totient is φ = 11131230250.

The previous prime is 11131230193. The next prime is 11131230323. The reversal of 11131230251 is 15203213111.

11131230251 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 an emirp because it is prime and its reverse (15203213111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11131230251 - 2¹⁰ = 11131229227 is a prime.

It is not a weakly prime, because it can be changed into another prime (11131290251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5565615125 + 5565615126.

It is an arithmetic number, because the mean of its divisors is an integer number (5565615126).

Almost surely, 2^11131230251 is an apocalyptic number.

11131230251 is a deficient number, since it is larger than the sum of its proper divisors (1).

11131230251 is an equidigital number, since it uses as much as digits as its factorization.

11131230251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 20.

Adding to 11131230251 its reverse (15203213111), we get a palindrome (26334443362).

The spelling of 11131230251 in words is "eleven billion, one hundred thirty-one million, two hundred thirty thousand, two hundred fifty-one".