1123212323 has 4 divisors (see below), whose sum is σ = 1142249880. Its totient is φ = 1104174768.

The previous prime is 1123212319. The next prime is 1123212397. The reversal of 1123212323 is 3232123211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3232123211 = 103 ⋅31379837.

It is a cyclic number.

It is not a de Polignac number, because 1123212323 - 2² = 1123212319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1123212295 and 1123212304.

It is not an unprimeable number, because it can be changed into a prime (1123212313) 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, 9518690 + ... + 9518807.

It is an arithmetic number, because the mean of its divisors is an integer number (285562470).

Almost surely, 2^1123212323 is an apocalyptic number.

1123212323 is a deficient number, since it is larger than the sum of its proper divisors (19037557).

1123212323 is an equidigital number, since it uses as much as digits as its factorization.

1123212323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19037556.

The product of its digits is 432, while the sum is 20.

The square root of 1123212323 is about 33514.3599521160. The cubic root of 1123212323 is about 1039.4907279139.

Adding to 1123212323 its reverse (3232123211), we get a palindrome (4355335534).

The spelling of 1123212323 in words is "one billion, one hundred twenty-three million, two hundred twelve thousand, three hundred twenty-three".