1243393223 has 2 divisors, whose sum is σ = 1243393224. Its totient is φ = 1243393222.

The previous prime is 1243393213. The next prime is 1243393267. The reversal of 1243393223 is 3223933421.

It is a weak prime.

It is an emirp because it is prime and its reverse (3223933421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1243393223 - 2²⁰ = 1242344647 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1243393223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243393213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621696611 + 621696612.

It is an arithmetic number, because the mean of its divisors is an integer number (621696612).

Almost surely, 2^1243393223 is an apocalyptic number.

1243393223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243393223 is an equidigital number, since it uses as much as digits as its factorization.

1243393223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 32.

The square root of 1243393223 is about 35261.7813361719. The cubic root of 1243393223 is about 1075.3161422442.

The spelling of 1243393223 in words is "one billion, two hundred forty-three million, three hundred ninety-three thousand, two hundred twenty-three".