1123232311 has 4 divisors (see below), whose sum is σ = 1123380832. Its totient is φ = 1123083792.

The previous prime is 1123232293. The next prime is 1123232333. The reversal of 1123232311 is 1132323211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123232311 - 2¹¹ = 1123230263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123239311) 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, 62271 + ... + 78256.

It is an arithmetic number, because the mean of its divisors is an integer number (280845208).

Almost surely, 2^1123232311 is an apocalyptic number.

1123232311 is a deficient number, since it is larger than the sum of its proper divisors (148521).

1123232311 is an equidigital number, since it uses as much as digits as its factorization.

1123232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148520.

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

The square root of 1123232311 is about 33514.6581513224. The cubic root of 1123232311 is about 1039.4968939245.

Adding to 1123232311 its reverse (1132323211), we get a palindrome (2255555522).

The spelling of 1123232311 in words is "one billion, one hundred twenty-three million, two hundred thirty-two thousand, three hundred eleven".