13931064 has 96 divisors (see below), whose sum is σ = 43655040. Its totient is φ = 3931200.

The previous prime is 13931039. The next prime is 13931069. The reversal of 13931064 is 46013931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65919 + ... + 66129.

It is an arithmetic number, because the mean of its divisors is an integer number (454740).

Almost surely, 2^13931064 is an apocalyptic number.

13931064 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13931064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21827520).

13931064 is an abundant number, since it is smaller than the sum of its proper divisors (29723976).

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

13931064 is a wasteful number, since it uses less digits than its factorization.

13931064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 13931064 is about 3732.4340583592. The cubic root of 13931064 is about 240.6179906656.

Adding to 13931064 its reverse (46013931), we get a palindrome (59944995).

The spelling of 13931064 in words is "thirteen million, nine hundred thirty-one thousand, sixty-four".