13111311023 has 6 divisors (see below), whose sum is σ = 13706153664. Its totient is φ = 12541253516.

The previous prime is 13111311007. The next prime is 13111311029. The reversal of 13111311023 is 32011311131.

It is not a de Polignac number, because 13111311023 - 2⁴ = 13111311007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111310992 and 13111311010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111311029) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12392015 + ... + 12393072.

It is an arithmetic number, because the mean of its divisors is an integer number (2284358944).

Almost surely, 2^13111311023 is an apocalyptic number.

13111311023 is a deficient number, since it is larger than the sum of its proper divisors (594842641).

13111311023 is an equidigital number, since it uses as much as digits as its factorization.

13111311023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24785133 (or 24785110 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 13111311023 its reverse (32011311131), we get a palindrome (45122622154).

The spelling of 13111311023 in words is "thirteen billion, one hundred eleven million, three hundred eleven thousand, twenty-three".