13707731 has 8 divisors (see below), whose sum is σ = 14047440. Its totient is φ = 13372128.

The previous prime is 13707719. The next prime is 13707739. The reversal of 13707731 is 13770731.

It is a happy number.

13707731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13707731 - 2⁶ = 13707667 is a prime.

It is a super-3 number, since 3×13707731³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13707694 and 13707703.

It is not an unprimeable number, because it can be changed into a prime (13707739) 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, 6365 + ... + 8241.

It is an arithmetic number, because the mean of its divisors is an integer number (1755930).

Almost surely, 2^13707731 is an apocalyptic number.

13707731 is a deficient number, since it is larger than the sum of its proper divisors (339709).

13707731 is a wasteful number, since it uses less digits than its factorization.

13707731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053.

The product of its (nonzero) digits is 3087, while the sum is 29.

The square root of 13707731 is about 3702.3953057446. The cubic root of 13707731 is about 239.3252517468.

The spelling of 13707731 in words is "thirteen million, seven hundred seven thousand, seven hundred thirty-one".