11123040013 has 4 divisors (see below), whose sum is σ = 11169193948. Its totient is φ = 11076886080.

The previous prime is 11123039989. The next prime is 11123040031. The reversal of 11123040013 is 31004032111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31004032111 = 13 ⋅2384925547.

It can be written as a sum of positive squares in 2 ways, for example, as 4478018724 + 6645021289 = 66918^2 + 81517^2 .

It is a cyclic number.

It is not a de Polignac number, because 11123040013 - 2⁵ = 11123039981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11123040043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23076606 + ... + 23077087.

It is an arithmetic number, because the mean of its divisors is an integer number (2792298487).

Almost surely, 2^11123040013 is an apocalyptic number.

It is an amenable number.

11123040013 is a deficient number, since it is larger than the sum of its proper divisors (46153935).

11123040013 is an equidigital number, since it uses as much as digits as its factorization.

11123040013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46153934.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11123040013 its reverse (31004032111), we get a palindrome (42127072124).

The spelling of 11123040013 in words is "eleven billion, one hundred twenty-three million, forty thousand, thirteen".