13123531324511 has 12 divisors (see below), whose sum is σ = 13719443196312. Its totient is φ = 12552471442896.

The previous prime is 13123531324481. The next prime is 13123531324523. The reversal of 13123531324511 is 11542313532131.

It is not a de Polignac number, because 13123531324511 - 2⁶ = 13123531324447 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 (13123531324531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14056625 + ... + 14961141.

It is an arithmetic number, because the mean of its divisors is an integer number (1143286933026).

Almost surely, 2^{13123531324511} is an apocalyptic number.

13123531324511 is a deficient number, since it is larger than the sum of its proper divisors (595911871801).

13123531324511 is an equidigital number, since it uses as much as digits as its factorization.

13123531324511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931990 (or 931967 counting only the distinct ones).

The product of its digits is 32400, while the sum is 35.

Adding to 13123531324511 its reverse (11542313532131), we get a palindrome (24665844856642).

The spelling of 13123531324511 in words is "thirteen trillion, one hundred twenty-three billion, five hundred thirty-one million, three hundred twenty-four thousand, five hundred eleven".