13117719 has 4 divisors (see below), whose sum is σ = 17490296. Its totient is φ = 8745144.

The previous prime is 13117711. The next prime is 13117723. The reversal of 13117719 is 91771131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13117719 - 2³ = 13117711 is a prime.

It is a super-2 number, since 2×13117719² = 344149103525922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13117711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2186284 + ... + 2186289.

It is an arithmetic number, because the mean of its divisors is an integer number (4372574).

Almost surely, 2^13117719 is an apocalyptic number.

13117719 is a deficient number, since it is larger than the sum of its proper divisors (4372577).

13117719 is an equidigital number, since it uses as much as digits as its factorization.

13117719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372576.

The product of its digits is 1323, while the sum is 30.

The square root of 13117719 is about 3621.8391736796. The cubic root of 13117719 is about 235.8410724970.

The spelling of 13117719 in words is "thirteen million, one hundred seventeen thousand, seven hundred nineteen".