13531005321 has 8 divisors (see below), whose sum is σ = 18077209920. Its totient is φ = 9002735472.

The previous prime is 13531005253. The next prime is 13531005353. The reversal of 13531005321 is 12350013531.

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

It is not a de Polignac number, because 13531005321 - 2⁷ = 13531005193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531005291 and 13531005300.

It is not an unprimeable number, because it can be changed into a prime (13531005391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4481926 + ... + 4484943.

It is an arithmetic number, because the mean of its divisors is an integer number (2259651240).

Almost surely, 2^13531005321 is an apocalyptic number.

It is an amenable number.

13531005321 is a deficient number, since it is larger than the sum of its proper divisors (4546204599).

13531005321 is an equidigital number, since it uses as much as digits as its factorization.

13531005321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8967375.

The product of its (nonzero) digits is 1350, while the sum is 24.

Adding to 13531005321 its reverse (12350013531), we get a palindrome (25881018852).

The spelling of 13531005321 in words is "thirteen billion, five hundred thirty-one million, five thousand, three hundred twenty-one".