13216143531 has 16 divisors (see below), whose sum is σ = 17780092704. Its totient is φ = 8731828224.

The previous prime is 13216143529. The next prime is 13216143539. The reversal of 13216143531 is 13534161231.

It is not a de Polignac number, because 13216143531 - 2¹ = 13216143529 is a prime.

It is a super-2 number, since 2×13216143531² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13216143539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108381 + ... + 195393.

It is an arithmetic number, because the mean of its divisors is an integer number (1111255794).

Almost surely, 2^13216143531 is an apocalyptic number.

13216143531 is a deficient number, since it is larger than the sum of its proper divisors (4563949173).

13216143531 is a wasteful number, since it uses less digits than its factorization.

13216143531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87470.

The product of its digits is 6480, while the sum is 30.

The spelling of 13216143531 in words is "thirteen billion, two hundred sixteen million, one hundred forty-three thousand, five hundred thirty-one".