13531201311 has 4 divisors (see below), whose sum is σ = 18041601752. Its totient is φ = 9020800872.

The previous prime is 13531201261. The next prime is 13531201331. The reversal of 13531201311 is 11310213531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11310213531 = 3 ⋅3770071177.

It is not a de Polignac number, because 13531201311 - 2⁶ = 13531201247 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 (13531201331) 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, 2255200216 + ... + 2255200221.

It is an arithmetic number, because the mean of its divisors is an integer number (4510400438).

Almost surely, 2^13531201311 is an apocalyptic number.

13531201311 is a deficient number, since it is larger than the sum of its proper divisors (4510400441).

13531201311 is an equidigital number, since it uses as much as digits as its factorization.

13531201311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510400440.

The product of its (nonzero) digits is 270, while the sum is 21.

Adding to 13531201311 its reverse (11310213531), we get a palindrome (24841414842).

The spelling of 13531201311 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, three hundred eleven".