11326431361 has 4 divisors (see below), whose sum is σ = 12944492992. Its totient is φ = 9708369732.

The previous prime is 11326431349. The next prime is 11326431401. The reversal of 11326431361 is 16313462311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11326431361 - 2¹⁵ = 11326398593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11326431761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809030805 + ... + 809030818.

It is an arithmetic number, because the mean of its divisors is an integer number (3236123248).

Almost surely, 2^11326431361 is an apocalyptic number.

It is an amenable number.

11326431361 is a deficient number, since it is larger than the sum of its proper divisors (1618061631).

11326431361 is an equidigital number, since it uses as much as digits as its factorization.

11326431361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618061630.

The product of its digits is 7776, while the sum is 31.

Adding to 11326431361 its reverse (16313462311), we get a palindrome (27639893672).

The spelling of 11326431361 in words is "eleven billion, three hundred twenty-six million, four hundred thirty-one thousand, three hundred sixty-one".