11530123 has 4 divisors (see below), whose sum is σ = 12578328. Its totient is φ = 10481920.

The previous prime is 11530121. The next prime is 11530133. The reversal of 11530123 is 32103511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32103511 = 11 ⋅2918501.

It is a cyclic number.

It is not a de Polignac number, because 11530123 - 2¹ = 11530121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11530097 and 11530106.

It is not an unprimeable number, because it can be changed into a prime (11530121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 524086 + ... + 524107.

It is an arithmetic number, because the mean of its divisors is an integer number (3144582).

Almost surely, 2^11530123 is an apocalyptic number.

11530123 is a deficient number, since it is larger than the sum of its proper divisors (1048205).

11530123 is a wasteful number, since it uses less digits than its factorization.

11530123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048204.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 11530123 is about 3395.6034809736. The cubic root of 11530123 is about 225.9147810896.

Adding to 11530123 its reverse (32103511), we get a palindrome (43633634).

The spelling of 11530123 in words is "eleven million, five hundred thirty thousand, one hundred twenty-three".