1123311503 has 2 divisors, whose sum is σ = 1123311504. Its totient is φ = 1123311502.

The previous prime is 1123311493. The next prime is 1123311557. The reversal of 1123311503 is 3051133211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123311503 - 2⁴ = 1123311487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123311593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561655751 + 561655752.

It is an arithmetic number, because the mean of its divisors is an integer number (561655752).

Almost surely, 2^1123311503 is an apocalyptic number.

1123311503 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123311503 is an equidigital number, since it uses as much as digits as its factorization.

1123311503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1123311503 is about 33515.8395836953. The cubic root of 1123311503 is about 1039.5213227990.

Adding to 1123311503 its reverse (3051133211), we get a palindrome (4174444714).

The spelling of 1123311503 in words is "one billion, one hundred twenty-three million, three hundred eleven thousand, five hundred three".