13131531747 has 12 divisors (see below), whose sum is σ = 19010980560. Its totient is φ = 8734410288.

The previous prime is 13131531713. The next prime is 13131531857. The reversal of 13131531747 is 74713513131.

It is not a de Polignac number, because 13131531747 - 2¹¹ = 13131529699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13131521747) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1657848 + ... + 1665749.

It is an arithmetic number, because the mean of its divisors is an integer number (1584248380).

Almost surely, 2^13131531747 is an apocalyptic number.

13131531747 is a deficient number, since it is larger than the sum of its proper divisors (5879448813).

13131531747 is a wasteful number, since it uses less digits than its factorization.

13131531747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3324042 (or 3324039 counting only the distinct ones).

The product of its digits is 26460, while the sum is 36.

The spelling of 13131531747 in words is "thirteen billion, one hundred thirty-one million, five hundred thirty-one thousand, seven hundred forty-seven".