11147123 has 4 divisors (see below), whose sum is σ = 12004608. Its totient is φ = 10289640.

The previous prime is 11147099. The next prime is 11147141. The reversal of 11147123 is 32174111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32174111 = 673 ⋅47807.

It is a cyclic number.

It is not a de Polignac number, because 11147123 - 2²⁰ = 10098547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11147095 and 11147104.

It is not an unprimeable number, because it can be changed into a prime (11147023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 428723 + ... + 428748.

It is an arithmetic number, because the mean of its divisors is an integer number (3001152).

Almost surely, 2^11147123 is an apocalyptic number.

11147123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

11147123 is a deficient number, since it is larger than the sum of its proper divisors (857485).

11147123 is an equidigital number, since it uses as much as digits as its factorization.

11147123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857484.

The product of its digits is 168, while the sum is 20.

The square root of 11147123 is about 3338.7307468558. The cubic root of 11147123 is about 223.3851321647.

The spelling of 11147123 in words is "eleven million, one hundred forty-seven thousand, one hundred twenty-three".