11172311 has 2 divisors, whose sum is σ = 11172312. Its totient is φ = 11172310.

The previous prime is 11172289. The next prime is 11172313. The reversal of 11172311 is 11327111.

11172311 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11172311 - 2¹⁸ = 10910167 is a prime.

Together with 11172313, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11172311.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11172313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5586155 + 5586156.

It is an arithmetic number, because the mean of its divisors is an integer number (5586156).

Almost surely, 2^11172311 is an apocalyptic number.

11172311 is a deficient number, since it is larger than the sum of its proper divisors (1).

11172311 is an equidigital number, since it uses as much as digits as its factorization.

11172311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42, while the sum is 17.

The square root of 11172311 is about 3342.5007105459. The cubic root of 11172311 is about 223.5532590154.

Adding to 11172311 its reverse (11327111), we get a palindrome (22499422).

The spelling of 11172311 in words is "eleven million, one hundred seventy-two thousand, three hundred eleven".