1223231243 has 16 divisors (see below), whose sum is σ = 1396180800. Its totient is φ = 1061677056.

The previous prime is 1223231221. The next prime is 1223231257. The reversal of 1223231243 is 3421323221.

It is a cyclic number.

It is not a de Polignac number, because 1223231243 - 2¹⁰ = 1223230219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223231203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 300083 + ... + 304131.

It is an arithmetic number, because the mean of its divisors is an integer number (87261300).

Almost surely, 2^1223231243 is an apocalyptic number.

1223231243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1223231243 is a deficient number, since it is larger than the sum of its proper divisors (172949557).

1223231243 is a wasteful number, since it uses less digits than its factorization.

1223231243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5446.

The product of its digits is 1728, while the sum is 23.

The square root of 1223231243 is about 34974.7229152713. The cubic root of 1223231243 is about 1069.4722535038.

Adding to 1223231243 its reverse (3421323221), we get a palindrome (4644554464).

The spelling of 1223231243 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, two hundred forty-three".