13531143111 has 8 divisors (see below), whose sum is σ = 18381930480. Its totient is φ = 8850558912.

The previous prime is 13531143083. The next prime is 13531143163. The reversal of 13531143111 is 11134113531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13531143111 - 2⁷ = 13531142983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531143181) 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, 42550606 + ... + 42550923.

It is an arithmetic number, because the mean of its divisors is an integer number (2297741310).

Almost surely, 2^13531143111 is an apocalyptic number.

13531143111 is a deficient number, since it is larger than the sum of its proper divisors (4850787369).

13531143111 is an equidigital number, since it uses as much as digits as its factorization.

13531143111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85101585.

The product of its digits is 540, while the sum is 24.

Adding to 13531143111 its reverse (11134113531), we get a palindrome (24665256642).

The spelling of 13531143111 in words is "thirteen billion, five hundred thirty-one million, one hundred forty-three thousand, one hundred eleven".