11142323243 has 4 divisors (see below), whose sum is σ = 11797754040. Its totient is φ = 10486892448.

The previous prime is 11142323239. The next prime is 11142323249. The reversal of 11142323243 is 34232324111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34232324111 = 19 ⋅1801701269.

It is a cyclic number.

It is not a de Polignac number, because 11142323243 - 2² = 11142323239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11142323249) 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, 327715373 + ... + 327715406.

It is an arithmetic number, because the mean of its divisors is an integer number (2949438510).

Almost surely, 2^11142323243 is an apocalyptic number.

11142323243 is a deficient number, since it is larger than the sum of its proper divisors (655430797).

11142323243 is an equidigital number, since it uses as much as digits as its factorization.

11142323243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655430796.

The product of its digits is 3456, while the sum is 26.

Adding to 11142323243 its reverse (34232324111), we get a palindrome (45374647354).

The spelling of 11142323243 in words is "eleven billion, one hundred forty-two million, three hundred twenty-three thousand, two hundred forty-three".