11040031243 has 4 divisors (see below), whose sum is σ = 11070113440. Its totient is φ = 11009949048.

The previous prime is 11040031241. The next prime is 11040031279. The reversal of 11040031243 is 34213004011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11040031243 - 2¹ = 11040031241 is a prime.

It is a super-2 number, since 2×11040031243² (a number of 21 digits) contains 22 as substring.

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 11040031243.

It is not an unprimeable number, because it can be changed into a prime (11040031241) 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, 15040548 + ... + 15041281.

It is an arithmetic number, because the mean of its divisors is an integer number (2767528360).

Almost surely, 2^11040031243 is an apocalyptic number.

11040031243 is a deficient number, since it is larger than the sum of its proper divisors (30082197).

11040031243 is an equidigital number, since it uses as much as digits as its factorization.

11040031243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30082196.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11040031243 its reverse (34213004011), we get a palindrome (45253035254).

The spelling of 11040031243 in words is "eleven billion, forty million, thirty-one thousand, two hundred forty-three".