13731039 has 40 divisors (see below), whose sum is σ = 23886368. Its totient is φ = 7698240.

The previous prime is 13731037. The next prime is 13731043. The reversal of 13731039 is 93013731.

It is not a de Polignac number, because 13731039 - 2¹ = 13731037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13731031) 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 39 ways as a sum of consecutive naturals, for example, 34389 + ... + 34785.

Almost surely, 2^13731039 is an apocalyptic number.

13731039 is a deficient number, since it is larger than the sum of its proper divisors (10155329).

13731039 is an equidigital number, since it uses as much as digits as its factorization.

13731039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 1701, while the sum is 27.

The square root of 13731039 is about 3705.5416608102. The cubic root of 13731039 is about 239.4608208481.

The spelling of 13731039 in words is "thirteen million, seven hundred thirty-one thousand, thirty-nine".