11313213217 has 2 divisors, whose sum is σ = 11313213218. Its totient is φ = 11313213216.

The previous prime is 11313213211. The next prime is 11313213221. The reversal of 11313213217 is 71231231311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8912115216 + 2401098001 = 94404^2 + 49001^2 .

It is a cyclic number.

It is not a de Polignac number, because 11313213217 - 2⁷ = 11313213089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11313213191 and 11313213200.

It is not a weakly prime, because it can be changed into another prime (11313213211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5656606608 + 5656606609.

It is an arithmetic number, because the mean of its divisors is an integer number (5656606609).

Almost surely, 2^11313213217 is an apocalyptic number.

It is an amenable number.

11313213217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11313213217 is an equidigital number, since it uses as much as digits as its factorization.

11313213217 is an evil number, because the sum of its binary digits is even.

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

Adding to 11313213217 its reverse (71231231311), we get a palindrome (82544444528).

The spelling of 11313213217 in words is "eleven billion, three hundred thirteen million, two hundred thirteen thousand, two hundred seventeen".