11103123313 has 4 divisors (see below), whose sum is σ = 11104304868. Its totient is φ = 11101941760.

The previous prime is 11103123307. The next prime is 11103123331. The reversal of 11103123313 is 31332130111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31332130111 = 67 ⋅467643733.

It can be written as a sum of positive squares in 2 ways, for example, as 6520239504 + 4582883809 = 80748^2 + 67697^2 .

It is a cyclic number.

It is not a de Polignac number, because 11103123313 - 2²⁹ = 10566252401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11103124313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576568 + ... + 595513.

It is an arithmetic number, because the mean of its divisors is an integer number (2776076217).

Almost surely, 2^11103123313 is an apocalyptic number.

It is an amenable number.

11103123313 is a deficient number, since it is larger than the sum of its proper divisors (1181555).

11103123313 is an equidigital number, since it uses as much as digits as its factorization.

11103123313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181554.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 11103123313 its reverse (31332130111), we get a palindrome (42435253424).

The spelling of 11103123313 in words is "eleven billion, one hundred three million, one hundred twenty-three thousand, three hundred thirteen".