13531354123 has 4 divisors (see below), whose sum is σ = 15464404720. Its totient is φ = 11598303528.

The previous prime is 13531354121. The next prime is 13531354171. The reversal of 13531354123 is 32145313531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13531354123 - 2¹ = 13531354121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531354121) 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, 966525288 + ... + 966525301.

It is an arithmetic number, because the mean of its divisors is an integer number (3866101180).

Almost surely, 2^13531354123 is an apocalyptic number.

13531354123 is a deficient number, since it is larger than the sum of its proper divisors (1933050597).

13531354123 is an equidigital number, since it uses as much as digits as its factorization.

13531354123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1933050596.

The product of its digits is 16200, while the sum is 31.

Adding to 13531354123 its reverse (32145313531), we get a palindrome (45676667654).

The spelling of 13531354123 in words is "thirteen billion, five hundred thirty-one million, three hundred fifty-four thousand, one hundred twenty-three".