11521323 has 24 divisors (see below), whose sum is σ = 18785520. Its totient is φ = 6740160.

The previous prime is 11521303. The next prime is 11521327. The reversal of 11521323 is 32312511.

It is not a de Polignac number, because 11521323 - 2⁶ = 11521259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11521296 and 11521305.

It is not an unprimeable number, because it can be changed into a prime (11521327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 865 + ... + 4877.

It is an arithmetic number, because the mean of its divisors is an integer number (782730).

Almost surely, 2^11521323 is an apocalyptic number.

11521323 is a deficient number, since it is larger than the sum of its proper divisors (7264197).

11521323 is a wasteful number, since it uses less digits than its factorization.

11521323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4059 (or 4056 counting only the distinct ones).

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

The square root of 11521323 is about 3394.3074404067. The cubic root of 11521323 is about 225.8572923690.

Adding to 11521323 its reverse (32312511), we get a palindrome (43833834).

The spelling of 11521323 in words is "eleven million, five hundred twenty-one thousand, three hundred twenty-three".