1123232113 has 4 divisors (see below), whose sum is σ = 1126821028. Its totient is φ = 1119643200.

The previous prime is 1123232107. The next prime is 1123232129. The reversal of 1123232113 is 3112323211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 185831424 + 937400689 = 13632^2 + 30617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123232113 - 2⁹ = 1123231601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1123232213) 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, 1793988 + ... + 1794613.

It is an arithmetic number, because the mean of its divisors is an integer number (281705257).

Almost surely, 2^1123232113 is an apocalyptic number.

It is an amenable number.

1123232113 is a deficient number, since it is larger than the sum of its proper divisors (3588915).

1123232113 is an equidigital number, since it uses as much as digits as its factorization.

1123232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3588914.

The product of its digits is 216, while the sum is 19.

The square root of 1123232113 is about 33514.6551973909. The cubic root of 1123232113 is about 1039.4968328447.

Adding to 1123232113 its reverse (3112323211), we get a palindrome (4235555324).

It can be divided in two parts, 112323211 and 3, that multiplied together give a palindrome (336969633).

The spelling of 1123232113 in words is "one billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred thirteen".