13111223115311 has 2 divisors, whose sum is σ = 13111223115312. Its totient is φ = 13111223115310.

The previous prime is 13111223115301. The next prime is 13111223115317. The reversal of 13111223115311 is 11351132211131.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13111223115311 - 2³⁰ = 13110149373487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13111223115317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555611557655 + 6555611557656.

It is an arithmetic number, because the mean of its divisors is an integer number (6555611557656).

Almost surely, 2^{13111223115311} is an apocalyptic number.

13111223115311 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111223115311 is an equidigital number, since it uses as much as digits as its factorization.

13111223115311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 26.

Adding to 13111223115311 its reverse (11351132211131), we get a palindrome (24462355326442).

The spelling of 13111223115311 in words is "thirteen trillion, one hundred eleven billion, two hundred twenty-three million, one hundred fifteen thousand, three hundred eleven".