11123240243 has 16 divisors (see below), whose sum is σ = 12290987520. Its totient is φ = 10019218176.

The previous prime is 11123240239. The next prime is 11123240279. The reversal of 11123240243 is 34204232111.

It is a cyclic number.

It is not a de Polignac number, because 11123240243 - 2² = 11123240239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (11123240543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3230 + ... + 149187.

It is an arithmetic number, because the mean of its divisors is an integer number (768186720).

Almost surely, 2^11123240243 is an apocalyptic number.

11123240243 is a deficient number, since it is larger than the sum of its proper divisors (1167747277).

11123240243 is a wasteful number, since it uses less digits than its factorization.

11123240243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152626.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 11123240243 its reverse (34204232111), we get a palindrome (45327472354).

The spelling of 11123240243 in words is "eleven billion, one hundred twenty-three million, two hundred forty thousand, two hundred forty-three".