1223616143 has 2 divisors, whose sum is σ = 1223616144. Its totient is φ = 1223616142.

The previous prime is 1223616133. The next prime is 1223616193. The reversal of 1223616143 is 3416163221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223616143 - 2¹⁴ = 1223599759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223616113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611808071 + 611808072.

It is an arithmetic number, because the mean of its divisors is an integer number (611808072).

Almost surely, 2^1223616143 is an apocalyptic number.

1223616143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223616143 is an equidigital number, since it uses as much as digits as its factorization.

1223616143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5184, while the sum is 29.

The square root of 1223616143 is about 34980.2250278640. The cubic root of 1223616143 is about 1069.5844145540.

Adding to 1223616143 its reverse (3416163221), we get a palindrome (4639779364).

The spelling of 1223616143 in words is "one billion, two hundred twenty-three million, six hundred sixteen thousand, one hundred forty-three".