13117843 has 8 divisors (see below), whose sum is σ = 13724928. Its totient is φ = 12513864.

The previous prime is 13117837. The next prime is 13117849. The reversal of 13117843 is 34871131.

It is an interprime number because it is at equal distance from previous prime (13117837) and next prime (13117849).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13117843 - 2⁹ = 13117331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13117849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14346 + ... + 15232.

It is an arithmetic number, because the mean of its divisors is an integer number (1715616).

Almost surely, 2^13117843 is an apocalyptic number.

13117843 is a deficient number, since it is larger than the sum of its proper divisors (607085).

13117843 is an equidigital number, since it uses as much as digits as its factorization.

13117843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553.

The product of its digits is 2016, while the sum is 28.

The square root of 13117843 is about 3621.8562920138. The cubic root of 13117843 is about 235.8418156191.

Adding to 13117843 its reverse (34871131), we get a palindrome (47988974).

The spelling of 13117843 in words is "thirteen million, one hundred seventeen thousand, eight hundred forty-three".