13231234540523 has 16 divisors (see below), whose sum is σ = 13341853827456. Its totient is φ = 13120974397440.

The previous prime is 13231234540501. The next prime is 13231234540543. The reversal of 13231234540523 is 32504543213231.

It is a cyclic number.

It is not a de Polignac number, because 13231234540523 - 2⁸ = 13231234540267 is a prime.

It is a super-2 number, since 2×13231234540523² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13231234540543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164870015 + ... + 164950247.

It is an arithmetic number, because the mean of its divisors is an integer number (833865864216).

Almost surely, 2^{13231234540523} is an apocalyptic number.

13231234540523 is a deficient number, since it is larger than the sum of its proper divisors (110619286933).

13231234540523 is a wasteful number, since it uses less digits than its factorization.

13231234540523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82454.

The product of its (nonzero) digits is 259200, while the sum is 38.

Adding to 13231234540523 its reverse (32504543213231), we get a palindrome (45735777753754).

The spelling of 13231234540523 in words is "thirteen trillion, two hundred thirty-one billion, two hundred thirty-four million, five hundred forty thousand, five hundred twenty-three".