13181286 has 8 divisors (see below), whose sum is σ = 26362584. Its totient is φ = 4393760.

The previous prime is 13181279. The next prime is 13181299. The reversal of 13181286 is 68218131.

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

13181286 is an admirable number.

It is a super-2 number, since 2×13181286² = 347492601227592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1098435 + ... + 1098446.

It is an arithmetic number, because the mean of its divisors is an integer number (3295323).

Almost surely, 2^13181286 is an apocalyptic number.

13181286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13181286 is a wasteful number, since it uses less digits than its factorization.

13181286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196886.

The product of its digits is 2304, while the sum is 30.

The square root of 13181286 is about 3630.6040819676. The cubic root of 13181286 is about 236.2214119547.

The spelling of 13181286 in words is "thirteen million, one hundred eighty-one thousand, two hundred eighty-six".