1223412143 has 2 divisors, whose sum is σ = 1223412144. Its totient is φ = 1223412142.

The previous prime is 1223412137. The next prime is 1223412199. The reversal of 1223412143 is 3412143221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3412143221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223412143 - 2⁸ = 1223411887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223412133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611706071 + 611706072.

It is an arithmetic number, because the mean of its divisors is an integer number (611706072).

Almost surely, 2^1223412143 is an apocalyptic number.

1223412143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223412143 is an equidigital number, since it uses as much as digits as its factorization.

1223412143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 1223412143 is about 34977.3089731043. The cubic root of 1223412143 is about 1069.5249712532.

Adding to 1223412143 its reverse (3412143221), we get a palindrome (4635555364).

The spelling of 1223412143 in words is "one billion, two hundred twenty-three million, four hundred twelve thousand, one hundred forty-three".