1223743263 has 4 divisors (see below), whose sum is σ = 1631657688. Its totient is φ = 815828840.

The previous prime is 1223743243. The next prime is 1223743273. The reversal of 1223743263 is 3623473221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3623473221 = 3 ⋅1207824407.

It is a cyclic number.

It is not a de Polignac number, because 1223743263 - 2⁵ = 1223743231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223743243) 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 3 ways as a sum of consecutive naturals, for example, 203957208 + ... + 203957213.

It is an arithmetic number, because the mean of its divisors is an integer number (407914422).

Almost surely, 2^1223743263 is an apocalyptic number.

1223743263 is a deficient number, since it is larger than the sum of its proper divisors (407914425).

1223743263 is an equidigital number, since it uses as much as digits as its factorization.

1223743263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407914424.

The product of its digits is 36288, while the sum is 33.

The square root of 1223743263 is about 34982.0420072928. The cubic root of 1223743263 is about 1069.6214525481.

The spelling of 1223743263 in words is "one billion, two hundred twenty-three million, seven hundred forty-three thousand, two hundred sixty-three".