13931004 has 24 divisors (see below), whose sum is σ = 32618320. Its totient is φ = 4627584.

The previous prime is 13931003. The next prime is 13931017. The reversal of 13931004 is 40013931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13931003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1902 + ... + 5610.

Almost surely, 2^13931004 is an apocalyptic number.

It is an amenable number.

13931004 is an abundant number, since it is smaller than the sum of its proper divisors (18687316).

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

13931004 is a wasteful number, since it uses less digits than its factorization.

13931004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4029 (or 4027 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 13931004 is about 3732.4260207002. The cubic root of 13931004 is about 240.6176452241.

Adding to 13931004 its reverse (40013931), we get a palindrome (53944935).

The spelling of 13931004 in words is "thirteen million, nine hundred thirty-one thousand, four".