13111244523 has 32 divisors (see below), whose sum is σ = 21110196800. Its totient is φ = 7994412288.

The previous prime is 13111244479. The next prime is 13111244533. The reversal of 13111244523 is 32544211131.

13111244523 is a `hidden beast` number, since 1 + 3 + 11 + 124 + 4 + 523 = 666.

It is not a de Polignac number, because 13111244523 - 2⁹ = 13111244011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111244533) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133090 + ... + 209607.

It is an arithmetic number, because the mean of its divisors is an integer number (659693650).

Almost surely, 2^13111244523 is an apocalyptic number.

13111244523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13111244523 is a deficient number, since it is larger than the sum of its proper divisors (7998952277).

13111244523 is a wasteful number, since it uses less digits than its factorization.

13111244523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342828 (or 342822 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

Adding to 13111244523 its reverse (32544211131), we get a palindrome (45655455654).

The spelling of 13111244523 in words is "thirteen billion, one hundred eleven million, two hundred forty-four thousand, five hundred twenty-three".