11323531 has 4 divisors (see below), whose sum is σ = 11340000. Its totient is φ = 11307064.

The previous prime is 11323519. The next prime is 11323549. The reversal of 11323531 is 13532311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13532311 = 13 ⋅1040947.

It is a cyclic number.

It is not a de Polignac number, because 11323531 - 2⁹ = 11323019 is a prime.

It is a super-2 number, since 2×11323531² = 256444708615922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11323499 and 11323508.

It is not an unprimeable number, because it can be changed into a prime (11323561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7156 + ... + 8593.

It is an arithmetic number, because the mean of its divisors is an integer number (2835000).

Almost surely, 2^11323531 is an apocalyptic number.

11323531 is a deficient number, since it is larger than the sum of its proper divisors (16469).

11323531 is an equidigital number, since it uses as much as digits as its factorization.

11323531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16468.

The product of its digits is 270, while the sum is 19.

The square root of 11323531 is about 3365.0454677463. The cubic root of 11323531 is about 224.5573585713.

Adding to 11323531 its reverse (13532311), we get a palindrome (24855842).

The spelling of 11323531 in words is "eleven million, three hundred twenty-three thousand, five hundred thirty-one".