11321312113 has 2 divisors, whose sum is σ = 11321312114. Its totient is φ = 11321312112.

The previous prime is 11321312111. The next prime is 11321312137. The reversal of 11321312113 is 31121312311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6213065329 + 5108246784 = 78823^2 + 71472^2 .

It is a cyclic number.

It is not a de Polignac number, because 11321312113 - 2¹ = 11321312111 is a prime.

Together with 11321312111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11321312111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5660656056 + 5660656057.

It is an arithmetic number, because the mean of its divisors is an integer number (5660656057).

Almost surely, 2^11321312113 is an apocalyptic number.

It is an amenable number.

11321312113 is a deficient number, since it is larger than the sum of its proper divisors (1).

11321312113 is an equidigital number, since it uses as much as digits as its factorization.

11321312113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 19.

Adding to 11321312113 its reverse (31121312311), we get a palindrome (42442624424).

The spelling of 11321312113 in words is "eleven billion, three hundred twenty-one million, three hundred twelve thousand, one hundred thirteen".