13531502231 has 16 divisors (see below), whose sum is σ = 14749274400. Its totient is φ = 12339468288.

The previous prime is 13531502227. The next prime is 13531502233. The reversal of 13531502231 is 13220513531.

13531502231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 13531502231 - 2² = 13531502227 is a prime.

It is a super-2 number, since 2×13531502231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13531502231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531502233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 708080 + ... + 726938.

It is an arithmetic number, because the mean of its divisors is an integer number (921829650).

Almost surely, 2^13531502231 is an apocalyptic number.

13531502231 is a deficient number, since it is larger than the sum of its proper divisors (1217772169).

13531502231 is a wasteful number, since it uses less digits than its factorization.

13531502231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19538.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13531502231 in words is "thirteen billion, five hundred thirty-one million, five hundred two thousand, two hundred thirty-one".