1123305211 has 16 divisors (see below), whose sum is σ = 1370755584. Its totient is φ = 899547264.

The previous prime is 1123305203. The next prime is 1123305233. The reversal of 1123305211 is 1125033211.

It is not a de Polignac number, because 1123305211 - 2³ = 1123305203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123305241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74206 + ... + 88051.

It is an arithmetic number, because the mean of its divisors is an integer number (85672224).

Almost surely, 2^1123305211 is an apocalyptic number.

1123305211 is a deficient number, since it is larger than the sum of its proper divisors (247450373).

1123305211 is a wasteful number, since it uses less digits than its factorization.

1123305211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162330.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1123305211 is about 33515.7457174982. The cubic root of 1123305211 is about 1039.5193819066.

Adding to 1123305211 its reverse (1125033211), we get a palindrome (2248338422).

Subtracting 1123305211 from its reverse (1125033211), we obtain a cube (1728000 = 120³).

The spelling of 1123305211 in words is "one billion, one hundred twenty-three million, three hundred five thousand, two hundred eleven".