1123311241 has 4 divisors (see below), whose sum is σ = 1209719812. Its totient is φ = 1036902672.

The previous prime is 1123311239. The next prime is 1123311247. The reversal of 1123311241 is 1421133211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1421133211 = 739 ⋅1923049.

It can be written as a sum of positive squares in 2 ways, for example, as 326886400 + 796424841 = 18080^2 + 28221^2 .

It is not a de Polignac number, because 1123311241 - 2¹ = 1123311239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123311247) 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, 43204266 + ... + 43204291.

It is an arithmetic number, because the mean of its divisors is an integer number (302429953).

Almost surely, 2^1123311241 is an apocalyptic number.

It is an amenable number.

1123311241 is a deficient number, since it is larger than the sum of its proper divisors (86408571).

1123311241 is an equidigital number, since it uses as much as digits as its factorization.

1123311241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86408570.

The product of its digits is 144, while the sum is 19.

The square root of 1123311241 is about 33515.8356750954. The cubic root of 1123311241 is about 1039.5212419801.

Adding to 1123311241 its reverse (1421133211), we get a palindrome (2544444452).

The spelling of 1123311241 in words is "one billion, one hundred twenty-three million, three hundred eleven thousand, two hundred forty-one".