11523623 has 4 divisors (see below), whose sum is σ = 11568720. Its totient is φ = 11478528.

The previous prime is 11523593. The next prime is 11523641. The reversal of 11523623 is 32632511.

11523623 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32632511 = 29 ⋅1125259.

It is a cyclic number.

It is not a de Polignac number, because 11523623 - 2⁶ = 11523559 is a prime.

It is a super-2 number, since 2×11523623² = 265587774092258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11523653) 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, 22163 + ... + 22676.

It is an arithmetic number, because the mean of its divisors is an integer number (2892180).

Almost surely, 2^11523623 is an apocalyptic number.

11523623 is a deficient number, since it is larger than the sum of its proper divisors (45097).

11523623 is an equidigital number, since it uses as much as digits as its factorization.

11523623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45096.

The product of its digits is 1080, while the sum is 23.

The square root of 11523623 is about 3394.6462260448. The cubic root of 11523623 is about 225.8723206549.

The spelling of 11523623 in words is "eleven million, five hundred twenty-three thousand, six hundred twenty-three".