13531123235 has 8 divisors (see below), whose sum is σ = 18556969056. Its totient is φ = 9278484480.

The previous prime is 13531123213. The next prime is 13531123283. The reversal of 13531123235 is 53232113531.

It is a happy number.

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

It is not a de Polignac number, because 13531123235 - 2¹⁴ = 13531106851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531123198 and 13531123207.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193301726 + ... + 193301795.

It is an arithmetic number, because the mean of its divisors is an integer number (2319621132).

Almost surely, 2^13531123235 is an apocalyptic number.

13531123235 is a deficient number, since it is larger than the sum of its proper divisors (5025845821).

13531123235 is an equidigital number, since it uses as much as digits as its factorization.

13531123235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386603533.

The product of its digits is 8100, while the sum is 29.

Adding to 13531123235 its reverse (53232113531), we get a palindrome (66763236766).

The spelling of 13531123235 in words is "thirteen billion, five hundred thirty-one million, one hundred twenty-three thousand, two hundred thirty-five".