13105512431043 has 4 divisors (see below), whose sum is σ = 17474016574728. Its totient is φ = 8737008287360.

The previous prime is 13105512431041. The next prime is 13105512431083. The reversal of 13105512431043 is 34013421550131.

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 13105512431043 - 2¹ = 13105512431041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13105512430995 and 13105512431013.

It is not an unprimeable number, because it can be changed into a prime (13105512431041) 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, 2184252071838 + ... + 2184252071843.

It is an arithmetic number, because the mean of its divisors is an integer number (4368504143682).

Almost surely, 2^{13105512431043} is an apocalyptic number.

13105512431043 is a deficient number, since it is larger than the sum of its proper divisors (4368504143685).

13105512431043 is an equidigital number, since it uses as much as digits as its factorization.

13105512431043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4368504143684.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 13105512431043 its reverse (34013421550131), we get a palindrome (47118933981174).

The spelling of 13105512431043 in words is "thirteen trillion, one hundred five billion, five hundred twelve million, four hundred thirty-one thousand, forty-three".