1123255723 has 2 divisors, whose sum is σ = 1123255724. Its totient is φ = 1123255722.

The previous prime is 1123255673. The next prime is 1123255751. The reversal of 1123255723 is 3275523211.

It is a strong prime.

It is an emirp because it is prime and its reverse (3275523211) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123255723 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123255223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561627861 + 561627862.

It is an arithmetic number, because the mean of its divisors is an integer number (561627862).

Almost surely, 2^1123255723 is an apocalyptic number.

1123255723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123255723 is an equidigital number, since it uses as much as digits as its factorization.

1123255723 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12600, while the sum is 31.

The square root of 1123255723 is about 33515.0074295084. The cubic root of 1123255723 is about 1039.5041160969.

Adding to 1123255723 its reverse (3275523211), we get a palindrome (4398778934).

The spelling of 1123255723 in words is "one billion, one hundred twenty-three million, two hundred fifty-five thousand, seven hundred twenty-three".