11242505231 has 2 divisors, whose sum is σ = 11242505232. Its totient is φ = 11242505230.

The previous prime is 11242505203. The next prime is 11242505237. The reversal of 11242505231 is 13250524211.

It is a strong prime.

It is an emirp because it is prime and its reverse (13250524211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11242505231 is a prime.

It is a super-2 number, since 2×11242505231² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11242505231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11242505237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5621252615 + 5621252616.

It is an arithmetic number, because the mean of its divisors is an integer number (5621252616).

Almost surely, 2^11242505231 is an apocalyptic number.

11242505231 is a deficient number, since it is larger than the sum of its proper divisors (1).

11242505231 is an equidigital number, since it uses as much as digits as its factorization.

11242505231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 26.

It can be divided in two parts, 11 and 242505231, that added together give a palindrome (242505242).

The spelling of 11242505231 in words is "eleven billion, two hundred forty-two million, five hundred five thousand, two hundred thirty-one".