13531135213 has 4 divisors (see below), whose sum is σ = 13575210880. Its totient is φ = 13487059548.

The previous prime is 13531135207. The next prime is 13531135243. The reversal of 13531135213 is 31253113531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531135213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531135243) 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, 22037373 + ... + 22037986.

It is an arithmetic number, because the mean of its divisors is an integer number (3393802720).

Almost surely, 2^13531135213 is an apocalyptic number.

It is an amenable number.

13531135213 is a deficient number, since it is larger than the sum of its proper divisors (44075667).

13531135213 is an equidigital number, since it uses as much as digits as its factorization.

13531135213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44075666.

The product of its digits is 4050, while the sum is 28.

Adding to 13531135213 its reverse (31253113531), we get a palindrome (44784248744).

The spelling of 13531135213 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-five thousand, two hundred thirteen".