11503243 has 8 divisors (see below), whose sum is σ = 12047616. Its totient is φ = 10962600.

The previous prime is 11503213. The next prime is 11503253. The reversal of 11503243 is 34230511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11503243 - 2¹³ = 11495051 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11503243.

It is not an unprimeable number, because it can be changed into a prime (11503213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6858 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (1505952).

Almost surely, 2^11503243 is an apocalyptic number.

11503243 is a deficient number, since it is larger than the sum of its proper divisors (544373).

11503243 is a wasteful number, since it uses less digits than its factorization.

11503243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 11503243 is about 3391.6431121213. The cubic root of 11503243 is about 225.7390872595.

Adding to 11503243 its reverse (34230511), we get a palindrome (45733754).

The spelling of 11503243 in words is "eleven million, five hundred three thousand, two hundred forty-three".