1223231305 has 16 divisors (see below), whose sum is σ = 1546715520. Its totient is φ = 926131968.

The previous prime is 1223231293. The next prime is 1223231327. The reversal of 1223231305 is 5031323221.

It is a cyclic number.

It is not a de Polignac number, because 1223231305 - 2²¹ = 1221134153 is a prime.

It is an unprimeable number.

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, 94929 + ... + 107041.

It is an arithmetic number, because the mean of its divisors is an integer number (96669720).

Almost surely, 2^1223231305 is an apocalyptic number.

It is an amenable number.

1223231305 is a deficient number, since it is larger than the sum of its proper divisors (323484215).

1223231305 is a wasteful number, since it uses less digits than its factorization.

1223231305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13200.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 1223231305 is about 34974.7238016257. The cubic root of 1223231305 is about 1069.4722715727.

Adding to 1223231305 its reverse (5031323221), we get a palindrome (6254554526).

The spelling of 1223231305 in words is "one billion, two hundred twenty-three million, two hundred thirty-one thousand, three hundred five".