11311117 has 2 divisors, whose sum is σ = 11311118. Its totient is φ = 11311116.

The previous prime is 11311109. The next prime is 11311123. The reversal of 11311117 is 71111311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10883401 + 427716 = 3299^2 + 654^2 .

It is an emirp because it is prime and its reverse (71111311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11311117 - 2³ = 11311109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11311117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11311127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655558 + 5655559.

It is an arithmetic number, because the mean of its divisors is an integer number (5655559).

Almost surely, 2^11311117 is an apocalyptic number.

It is an amenable number.

11311117 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311117 is an equidigital number, since it uses as much as digits as its factorization.

11311117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21, while the sum is 16.

The square root of 11311117 is about 3363.2004103235. The cubic root of 11311117 is about 224.4752677354.

Adding to 11311117 its reverse (71111311), we get a palindrome (82422428).

The spelling of 11311117 in words is "eleven million, three hundred eleven thousand, one hundred seventeen".