1243343343201 has 16 divisors (see below), whose sum is σ = 1668934310400. Its totient is φ = 823340528640.

The previous prime is 1243343343197. The next prime is 1243343343269. The reversal of 1243343343201 is 1023433433421.

It is a happy number.

It is not a de Polignac number, because 1243343343201 - 2² = 1243343343197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243343345201) 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 in 15 ways as a sum of consecutive naturals, for example, 1769230 + ... + 2369991.

It is an arithmetic number, because the mean of its divisors is an integer number (104308394400).

Almost surely, 2^{1243343343201} is an apocalyptic number.

It is an amenable number.

1243343343201 is a deficient number, since it is larger than the sum of its proper divisors (425590967199).

1243343343201 is a wasteful number, since it uses less digits than its factorization.

1243343343201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4139896.

The product of its (nonzero) digits is 62208, while the sum is 33.

Adding to 1243343343201 its reverse (1023433433421), we get a palindrome (2266776776622).

The spelling of 1243343343201 in words is "one trillion, two hundred forty-three billion, three hundred forty-three million, three hundred forty-three thousand, two hundred one".