11523123 has 12 divisors (see below), whose sum is σ = 16873480. Its totient is φ = 7576416.

The previous prime is 11523119. The next prime is 11523137. The reversal of 11523123 is 32132511.

It is not a de Polignac number, because 11523123 - 2² = 11523119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11523096 and 11523105.

It is not an unprimeable number, because it can be changed into a prime (11523143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8113 + ... + 9426.

Almost surely, 2^11523123 is an apocalyptic number.

11523123 is a deficient number, since it is larger than the sum of its proper divisors (5350357).

11523123 is a wasteful number, since it uses less digits than its factorization.

11523123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17618 (or 17615 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 11523123 is about 3394.5725798692. The cubic root of 11523123 is about 225.8690538064.

Adding to 11523123 its reverse (32132511), we get a palindrome (43655634).

The spelling of 11523123 in words is "eleven million, five hundred twenty-three thousand, one hundred twenty-three".