1303321312243 has 2 divisors, whose sum is σ = 1303321312244. Its totient is φ = 1303321312242.

The previous prime is 1303321312201. The next prime is 1303321312261. The reversal of 1303321312243 is 3422131233031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1303321312243 - 2²¹ = 1303319215091 is a prime.

It is a super-3 number, since 3×1303321312243³ (a number of 37 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1303321312283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651660656121 + 651660656122.

It is an arithmetic number, because the mean of its divisors is an integer number (651660656122).

Almost surely, 2^{1303321312243} is an apocalyptic number.

1303321312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303321312243 is an equidigital number, since it uses as much as digits as its factorization.

1303321312243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 1303321312243 its reverse (3422131233031), we get a palindrome (4725452545274).

The spelling of 1303321312243 in words is "one trillion, three hundred three billion, three hundred twenty-one million, three hundred twelve thousand, two hundred forty-three".