13731087707 has 4 divisors (see below), whose sum is σ = 14204573520. Its totient is φ = 13257601896.

The previous prime is 13731087701. The next prime is 13731087719. The reversal of 13731087707 is 70778013731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13731087707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13731087701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236742863 + ... + 236742920.

It is an arithmetic number, because the mean of its divisors is an integer number (3551143380).

Almost surely, 2^13731087707 is an apocalyptic number.

13731087707 is a deficient number, since it is larger than the sum of its proper divisors (473485813).

13731087707 is an equidigital number, since it uses as much as digits as its factorization.

13731087707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473485812.

The product of its (nonzero) digits is 172872, while the sum is 44.

The spelling of 13731087707 in words is "thirteen billion, seven hundred thirty-one million, eighty-seven thousand, seven hundred seven".