1211323223 has 8 divisors (see below), whose sum is σ = 1322144256. Its totient is φ = 1100619000.

The previous prime is 1211323193. The next prime is 1211323231. The reversal of 1211323223 is 3223231121.

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 1211323223 - 2¹⁶ = 1211257687 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211323195 and 1211323204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211323273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6761 + ... + 49682.

It is an arithmetic number, because the mean of its divisors is an integer number (165268032).

Almost surely, 2^1211323223 is an apocalyptic number.

1211323223 is a deficient number, since it is larger than the sum of its proper divisors (110821033).

1211323223 is a wasteful number, since it uses less digits than its factorization.

1211323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58405.

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

The square root of 1211323223 is about 34804.0690580857. The cubic root of 1211323223 is about 1065.9905331056.

Adding to 1211323223 its reverse (3223231121), we get a palindrome (4434554344).

The spelling of 1211323223 in words is "one billion, two hundred eleven million, three hundred twenty-three thousand, two hundred twenty-three".