13117919 has 2 divisors, whose sum is σ = 13117920. Its totient is φ = 13117918.

The previous prime is 13117891. The next prime is 13117921. The reversal of 13117919 is 91971131.

13117919 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 13117919 - 2¹⁶ = 13052383 is a prime.

It is a super-2 number, since 2×13117919² = 344159597781122, which contains 22 as substring.

Together with 13117921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13117969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6558959 + 6558960.

It is an arithmetic number, because the mean of its divisors is an integer number (6558960).

Almost surely, 2^13117919 is an apocalyptic number.

13117919 is a deficient number, since it is larger than the sum of its proper divisors (1).

13117919 is an equidigital number, since it uses as much as digits as its factorization.

13117919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1701, while the sum is 32.

The square root of 13117919 is about 3621.8667838561. The cubic root of 13117919 is about 235.8422710788.

The spelling of 13117919 in words is "thirteen million, one hundred seventeen thousand, nine hundred nineteen".