13531134021 has 8 divisors (see below), whose sum is σ = 18095049024. Its totient is φ = 8993987520.

The previous prime is 13531134011. The next prime is 13531134047. The reversal of 13531134021 is 12043113531.

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

It is not a de Polignac number, because 13531134021 - 2¹⁴ = 13531117637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13531133982 and 13531134000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531134011) 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, 6690945 + ... + 6692966.

It is an arithmetic number, because the mean of its divisors is an integer number (2261881128).

Almost surely, 2^13531134021 is an apocalyptic number.

It is an amenable number.

13531134021 is a deficient number, since it is larger than the sum of its proper divisors (4563915003).

13531134021 is a wasteful number, since it uses less digits than its factorization.

13531134021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13384251.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 13531134021 its reverse (12043113531), we get a palindrome (25574247552).

The spelling of 13531134021 in words is "thirteen billion, five hundred thirty-one million, one hundred thirty-four thousand, twenty-one".