1243100511343 has 2 divisors, whose sum is σ = 1243100511344. Its totient is φ = 1243100511342.

The previous prime is 1243100511293. The next prime is 1243100511391. The reversal of 1243100511343 is 3431150013421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1243100511343 - 2¹⁷ = 1243100380271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1243100511643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 621550255671 + 621550255672.

It is an arithmetic number, because the mean of its divisors is an integer number (621550255672).

Almost surely, 2^{1243100511343} is an apocalyptic number.

1243100511343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1243100511343 is an equidigital number, since it uses as much as digits as its factorization.

1243100511343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

Adding to 1243100511343 its reverse (3431150013421), we get a palindrome (4674250524764).

The spelling of 1243100511343 in words is "one trillion, two hundred forty-three billion, one hundred million, five hundred eleven thousand, three hundred forty-three".