13531143235 has 4 divisors (see below), whose sum is σ = 16237371888. Its totient is φ = 10824914584.

The previous prime is 13531143233. The next prime is 13531143247. The reversal of 13531143235 is 53234113531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13531143235 - 2¹ = 13531143233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531143197 and 13531143206.

It is not an unprimeable number, because it can be changed into a prime (13531143233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1353114319 + ... + 1353114328.

It is an arithmetic number, because the mean of its divisors is an integer number (4059342972).

Almost surely, 2^13531143235 is an apocalyptic number.

13531143235 is a deficient number, since it is larger than the sum of its proper divisors (2706228653).

13531143235 is an equidigital number, since it uses as much as digits as its factorization.

13531143235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706228652.

The product of its digits is 16200, while the sum is 31.

Adding to 13531143235 its reverse (53234113531), we get a palindrome (66765256766).

The spelling of 13531143235 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-three thousand, two hundred thirty-five".