6531316571 has 16 divisors (see below), whose sum is σ = 7098900480. Its totient is φ = 5973225120.

The previous prime is 6531316567. The next prime is 6531316607. The reversal of 6531316571 is 1756131356.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 6531316571 - 2² = 6531316567 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6531346571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 941606 + ... + 948516.

It is an arithmetic number, because the mean of its divisors is an integer number (443681280).

Almost surely, 2^6531316571 is an apocalyptic number.

6531316571 is a deficient number, since it is larger than the sum of its proper divisors (567583909).

6531316571 is a wasteful number, since it uses less digits than its factorization.

6531316571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7586.

The product of its digits is 56700, while the sum is 38.

The square root of 6531316571 is about 80816.5612421118. The cubic root of 6531316571 is about 1869.2479432706.

The spelling of 6531316571 in words is "six billion, five hundred thirty-one million, three hundred sixteen thousand, five hundred seventy-one".