11331131331217 has 2 divisors, whose sum is σ = 11331131331218. Its totient is φ = 11331131331216.

The previous prime is 11331131331209. The next prime is 11331131331229. The reversal of 11331131331217 is 71213313113311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10787867991121 + 543263340096 = 3284489^2 + 737064^2 .

It is a cyclic number.

It is not a de Polignac number, because 11331131331217 - 2³ = 11331131331209 is a prime.

It is not a weakly prime, because it can be changed into another prime (11331131337217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5665565665608 + 5665565665609.

It is an arithmetic number, because the mean of its divisors is an integer number (5665565665609).

Almost surely, 2^{11331131331217} is an apocalyptic number.

It is an amenable number.

11331131331217 is a deficient number, since it is larger than the sum of its proper divisors (1).

11331131331217 is an equidigital number, since it uses as much as digits as its factorization.

11331131331217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3402, while the sum is 31.

Adding to 11331131331217 its reverse (71213313113311), we get a palindrome (82544444444528).

The spelling of 11331131331217 in words is "eleven trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-one thousand, two hundred seventeen".