1123312271 has 2 divisors, whose sum is σ = 1123312272. Its totient is φ = 1123312270.

The previous prime is 1123312207. The next prime is 1123312273. The reversal of 1123312271 is 1722133211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1123312271 - 2⁶ = 1123312207 is a prime.

Together with 1123312273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123312273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561656135 + 561656136.

It is an arithmetic number, because the mean of its divisors is an integer number (561656136).

Almost surely, 2^1123312271 is an apocalyptic number.

1123312271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123312271 is an equidigital number, since it uses as much as digits as its factorization.

1123312271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 1123312271 is about 33515.8510409627. The cubic root of 1123312271 is about 1039.5215597034.

Adding to 1123312271 its reverse (1722133211), we get a palindrome (2845445482).

The spelling of 1123312271 in words is "one billion, one hundred twenty-three million, three hundred twelve thousand, two hundred seventy-one".