13708181 has 4 divisors (see below), whose sum is σ = 13741164. Its totient is φ = 13675200.

The previous prime is 13708153. The next prime is 13708187. The reversal of 13708181 is 18180731.

13708181 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4036081 + 9672100 = 2009^2 + 3110^2 .

It is a cyclic number.

It is not a de Polignac number, because 13708181 - 2²² = 9513877 is a prime.

It is a super-2 number, since 2×13708181² = 375828452657522, 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 (13708187) 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, 15860 + ... + 16701.

It is an arithmetic number, because the mean of its divisors is an integer number (3435291).

Almost surely, 2^13708181 is an apocalyptic number.

It is an amenable number.

13708181 is a deficient number, since it is larger than the sum of its proper divisors (32983).

13708181 is an equidigital number, since it uses as much as digits as its factorization.

13708181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32982.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 13708181 is about 3702.4560767145. The cubic root of 13708181 is about 239.3278705898.

The spelling of 13708181 in words is "thirteen million, seven hundred eight thousand, one hundred eighty-one".