13531322143 has 8 divisors (see below), whose sum is σ = 13550722848. Its totient is φ = 13511937504.

The previous prime is 13531322111. The next prime is 13531322171. The reversal of 13531322143 is 34122313531.

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

It is a cyclic number.

It is not a de Polignac number, because 13531322143 - 2⁵ = 13531322111 is a prime.

It is a super-2 number, since 2×13531322143² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531322543) 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 7 ways as a sum of consecutive naturals, for example, 3271905 + ... + 3276037.

It is an arithmetic number, because the mean of its divisors is an integer number (1693840356).

Almost surely, 2^13531322143 is an apocalyptic number.

13531322143 is a deficient number, since it is larger than the sum of its proper divisors (19400705).

13531322143 is a wasteful number, since it uses less digits than its factorization.

13531322143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033.

The product of its digits is 6480, while the sum is 28.

Adding to 13531322143 its reverse (34122313531), we get a palindrome (47653635674).

The spelling of 13531322143 in words is "thirteen billion, five hundred thirty-one million, three hundred twenty-two thousand, one hundred forty-three".