13105513403231 has 4 divisors (see below), whose sum is σ = 13106524098192. Its totient is φ = 13104502708272.

The previous prime is 13105513403201. The next prime is 13105513403239. The reversal of 13105513403231 is 13230431550131.

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

It is a cyclic number.

It is not a de Polignac number, because 13105513403231 - 2³⁰ = 13104439661407 is a prime.

It is a super-2 number, since 2×13105513403231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13105513403239) 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, 505328030 + ... + 505353963.

It is an arithmetic number, because the mean of its divisors is an integer number (3276631024548).

Almost surely, 2^{13105513403231} is an apocalyptic number.

13105513403231 is a deficient number, since it is larger than the sum of its proper divisors (1010694961).

13105513403231 is a wasteful number, since it uses less digits than its factorization.

13105513403231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010694960.

The product of its (nonzero) digits is 16200, while the sum is 32.

Adding to 13105513403231 its reverse (13230431550131), we get a palindrome (26335944953362).

The spelling of 13105513403231 in words is "thirteen trillion, one hundred five billion, five hundred thirteen million, four hundred three thousand, two hundred thirty-one".