11719 has 2 divisors, whose sum is σ = 11720. Its totient is φ = 11718.
The previous prime is 11717. The next prime is 11731. The reversal of 11719 is 91711.
It is a happy number.
It is a weak prime.
It is an emirp because it is prime and its reverse (91711) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 11719 - 21 = 11717 is a prime.
It is a super-2 number, since 2×117192 = 274669922, which contains 22 as substring.
Together with 11717, it forms a pair of twin primes.
It is a Chen prime.
It is a plaindrome in base 5.
It is a junction number, because it is equal to n+sod(n) for n = 11696 and 11705.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (11717) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5859 + 5860.
It is an arithmetic number, because the mean of its divisors is an integer number (5860).
211719 is an apocalyptic number.
11719 is the 63-rd hex number.
11719 is a deficient number, since it is larger than the sum of its proper divisors (1).
11719 is an equidigital number, since it uses as much as digits as its factorization.
11719 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 63, while the sum is 19.
The square root of 11719 is about 108.2543301674. The cubic root of 11719 is about 22.7141689311.
It can be divided in two parts, 117 and 19, that added together give a triangular number (136 = T16).
The spelling of 11719 in words is "eleven thousand, seven hundred nineteen".
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