11323131217 has 2 divisors, whose sum is σ = 11323131218. Its totient is φ = 11323131216.

The previous prime is 11323131203. The next prime is 11323131221. The reversal of 11323131217 is 71213132311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9099442881 + 2223688336 = 95391^2 + 47156^2 .

It is a cyclic number.

It is not a de Polignac number, because 11323131217 - 2²³ = 11314742609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11323131191 and 11323131200.

It is not a weakly prime, because it can be changed into another prime (11323131257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661565608 + 5661565609.

It is an arithmetic number, because the mean of its divisors is an integer number (5661565609).

Almost surely, 2^11323131217 is an apocalyptic number.

It is an amenable number.

11323131217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11323131217 is an equidigital number, since it uses as much as digits as its factorization.

11323131217 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 756, while the sum is 25.

Adding to 11323131217 its reverse (71213132311), we get a palindrome (82536263528).

The spelling of 11323131217 in words is "eleven billion, three hundred twenty-three million, one hundred thirty-one thousand, two hundred seventeen".