1223143247 has 2 divisors, whose sum is σ = 1223143248. Its totient is φ = 1223143246.

The previous prime is 1223143193. The next prime is 1223143267. The reversal of 1223143247 is 7423413221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1223143247 - 2¹⁸ = 1222881103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223143267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611571623 + 611571624.

It is an arithmetic number, because the mean of its divisors is an integer number (611571624).

Almost surely, 2^1223143247 is an apocalyptic number.

1223143247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223143247 is an equidigital number, since it uses as much as digits as its factorization.

1223143247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 29.

The square root of 1223143247 is about 34973.4648984055. The cubic root of 1223143247 is about 1069.4466078930.

Adding to 1223143247 its reverse (7423413221), we get a palindrome (8646556468).

The spelling of 1223143247 in words is "one billion, two hundred twenty-three million, one hundred forty-three thousand, two hundred forty-seven".