13117181 has 8 divisors (see below), whose sum is σ = 16353984. Its totient is φ = 10221120.

The previous prime is 13117177. The next prime is 13117207. The reversal of 13117181 is 18171131.

13117181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13117181 - 2² = 13117177 is a prime.

It is a super-2 number, since 2×13117181² = 344120874773522, 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 (13117121) 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 in 7 ways as a sum of consecutive naturals, for example, 85100 + ... + 85253.

It is an arithmetic number, because the mean of its divisors is an integer number (2044248).

Almost surely, 2^13117181 is an apocalyptic number.

13117181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13117181 is a deficient number, since it is larger than the sum of its proper divisors (3236803).

13117181 is a wasteful number, since it uses less digits than its factorization.

13117181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170371.

The product of its digits is 168, while the sum is 23.

The square root of 13117181 is about 3621.7649012602. The cubic root of 13117181 is about 235.8378482517.

The spelling of 13117181 in words is "thirteen million, one hundred seventeen thousand, one hundred eighty-one".