13931436 has 12 divisors (see below), whose sum is σ = 32506712. Its totient is φ = 4643808.

The previous prime is 13931383. The next prime is 13931443. The reversal of 13931436 is 63413931.

13931436 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

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, 580465 + ... + 580488.

Almost surely, 2^13931436 is an apocalyptic number.

It is an amenable number.

13931436 is an abundant number, since it is smaller than the sum of its proper divisors (18575276).

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

13931436 is a wasteful number, since it uses less digits than its factorization.

13931436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160960 (or 1160958 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 13931436 is about 3732.4838914589. The cubic root of 13931436 is about 240.6201323803.

The spelling of 13931436 in words is "thirteen million, nine hundred thirty-one thousand, four hundred thirty-six".