13111431441 has 16 divisors (see below), whose sum is σ = 19484481600. Its totient is φ = 7793791488.

The previous prime is 13111431419. The next prime is 13111431457. The reversal of 13111431441 is 14413411131.

It is not a de Polignac number, because 13111431441 - 2¹³ = 13111423249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13111431401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6764476 + ... + 6766413.

It is an arithmetic number, because the mean of its divisors is an integer number (1217780100).

Almost surely, 2^13111431441 is an apocalyptic number.

It is an amenable number.

13111431441 is a deficient number, since it is larger than the sum of its proper divisors (6373050159).

13111431441 is a wasteful number, since it uses less digits than its factorization.

13111431441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530928.

The product of its digits is 576, while the sum is 24.

Adding to 13111431441 its reverse (14413411131), we get a palindrome (27524842572).

The spelling of 13111431441 in words is "thirteen billion, one hundred eleven million, four hundred thirty-one thousand, four hundred forty-one".