1123443141 has 4 divisors (see below), whose sum is σ = 1497924192. Its totient is φ = 748962092.

The previous prime is 1123443133. The next prime is 1123443149. The reversal of 1123443141 is 1413443211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (1123443133) and next prime (1123443149).

It is a cyclic number.

It is not a de Polignac number, because 1123443141 - 2³ = 1123443133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123443149) 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, 187240521 + ... + 187240526.

It is an arithmetic number, because the mean of its divisors is an integer number (374481048).

Almost surely, 2^1123443141 is an apocalyptic number.

It is an amenable number.

1123443141 is a deficient number, since it is larger than the sum of its proper divisors (374481051).

1123443141 is an equidigital number, since it uses as much as digits as its factorization.

1123443141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374481050.

The product of its digits is 1152, while the sum is 24.

The square root of 1123443141 is about 33517.8033438947. The cubic root of 1123443141 is about 1039.5619274940.

Adding to 1123443141 its reverse (1413443211), we get a palindrome (2536886352).

The spelling of 1123443141 in words is "one billion, one hundred twenty-three million, four hundred forty-three thousand, one hundred forty-one".