13531145321 has 8 divisors (see below), whose sum is σ = 13555002240. Its totient is φ = 13507311312.

The previous prime is 13531145311. The next prime is 13531145371. The reversal of 13531145321 is 12354113531.

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 13531145321 - 2²⁶ = 13464036457 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13531145311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1505186 + ... + 1514148.

It is an arithmetic number, because the mean of its divisors is an integer number (1694375280).

Almost surely, 2^13531145321 is an apocalyptic number.

It is an amenable number.

13531145321 is a deficient number, since it is larger than the sum of its proper divisors (23856919).

13531145321 is a wasteful number, since it uses less digits than its factorization.

13531145321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11455.

The product of its digits is 5400, while the sum is 29.

Adding to 13531145321 its reverse (12354113531), we get a palindrome (25885258852).

The spelling of 13531145321 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-five thousand, three hundred twenty-one".