12242731291 has 6 divisors (see below), whose sum is σ = 14241544620. Its totient is φ = 10493769636.

The previous prime is 12242731247. The next prime is 12242731297. The reversal of 12242731291 is 19213724221.

12242731291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12242731291 - 2¹¹ = 12242729243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12242731297) 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 in 5 ways as a sum of consecutive naturals, for example, 124925781 + ... + 124925878.

It is an arithmetic number, because the mean of its divisors is an integer number (2373590770).

Almost surely, 2^12242731291 is an apocalyptic number.

12242731291 is a deficient number, since it is larger than the sum of its proper divisors (1998813329).

12242731291 is an equidigital number, since it uses as much as digits as its factorization.

12242731291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249851673 (or 249851666 counting only the distinct ones).

The product of its digits is 12096, while the sum is 34.

The spelling of 12242731291 in words is "twelve billion, two hundred forty-two million, seven hundred thirty-one thousand, two hundred ninety-one".