1123232111 has 8 divisors (see below), whose sum is σ = 1163205120. Its totient is φ = 1083888792.

The previous prime is 1123232107. The next prime is 1123232129. The reversal of 1123232111 is 1112323211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1123232111 - 2² = 1123232107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1123232111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123234111) 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 7 ways as a sum of consecutive naturals, for example, 153791 + ... + 160928.

It is an arithmetic number, because the mean of its divisors is an integer number (145400640).

Almost surely, 2^1123232111 is an apocalyptic number.

1123232111 is a deficient number, since it is larger than the sum of its proper divisors (39973009).

1123232111 is an equidigital number, since it uses as much as digits as its factorization.

1123232111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314845.

The product of its digits is 72, while the sum is 17.

The square root of 1123232111 is about 33514.6551675532. The cubic root of 1123232111 is about 1039.4968322278.

Adding to 1123232111 its reverse (1112323211), we get a palindrome (2235555322).

The spelling of 1123232111 in words is "one billion, one hundred twenty-three million, two hundred thirty-two thousand, one hundred eleven".