13931166 has 16 divisors (see below), whose sum is σ = 28615824. Its totient is φ = 4518144.

The previous prime is 13931153. The next prime is 13931167. The reversal of 13931166 is 66113931.

13931166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×13931166² = 388154772239112, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931167) 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, 31155 + ... + 31598.

It is an arithmetic number, because the mean of its divisors is an integer number (1788489).

Almost surely, 2^13931166 is an apocalyptic number.

13931166 is an abundant number, since it is smaller than the sum of its proper divisors (14684658).

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

13931166 is a wasteful number, since it uses less digits than its factorization.

13931166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62795.

The product of its digits is 2916, while the sum is 30.

The square root of 13931166 is about 3732.4477223399. The cubic root of 13931166 is about 240.6185779137.

The spelling of 13931166 in words is "thirteen million, nine hundred thirty-one thousand, one hundred sixty-six".