13311986 has 32 divisors (see below), whose sum is σ = 22861440. Its totient is φ = 5775616.

The previous prime is 13311973. The next prime is 13312001. The reversal of 13311986 is 68911331.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22385 + ... + 22971.

It is an arithmetic number, because the mean of its divisors is an integer number (714420).

Almost surely, 2^13311986 is an apocalyptic number.

13311986 is a deficient number, since it is larger than the sum of its proper divisors (9549454).

13311986 is a wasteful number, since it uses less digits than its factorization.

13311986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658.

The product of its digits is 3888, while the sum is 32.

The square root of 13311986 is about 3648.5594417523. The cubic root of 13311986 is about 236.9996023897. Note that the first 3 decimals are identical.

The spelling of 13311986 in words is "thirteen million, three hundred eleven thousand, nine hundred eighty-six".