1223403755 has 16 divisors (see below), whose sum is σ = 1684015104. Its totient is φ = 835803360.

The previous prime is 1223403751. The next prime is 1223403761. The reversal of 1223403755 is 5573043221.

It is not a de Polignac number, because 1223403755 - 2² = 1223403751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223403751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55007 + ... + 73976.

It is an arithmetic number, because the mean of its divisors is an integer number (105250944).

Almost surely, 2^1223403755 is an apocalyptic number.

1223403755 is a deficient number, since it is larger than the sum of its proper divisors (460611349).

1223403755 is a wasteful number, since it uses less digits than its factorization.

1223403755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129266.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 1223403755 is about 34977.1890665902. The cubic root of 1223403755 is about 1069.5225269431.

Adding to 1223403755 its reverse (5573043221), we get a palindrome (6796446976).

The spelling of 1223403755 in words is "one billion, two hundred twenty-three million, four hundred three thousand, seven hundred fifty-five".