13531202231 has 2 divisors, whose sum is σ = 13531202232. Its totient is φ = 13531202230.

The previous prime is 13531202219. The next prime is 13531202263. The reversal of 13531202231 is 13220213531.

13531202231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531202231 is a prime.

It is a super-2 number, since 2×13531202231² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531202197 and 13531202206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13531202831) 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 as a sum of consecutive naturals, namely, 6765601115 + 6765601116.

It is an arithmetic number, because the mean of its divisors is an integer number (6765601116).

Almost surely, 2^13531202231 is an apocalyptic number.

13531202231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531202231 is an equidigital number, since it uses as much as digits as its factorization.

13531202231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 13531202231 its reverse (13220213531), we get a palindrome (26751415762).

The spelling of 13531202231 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, two hundred thirty-one".