1001345243 has 2 divisors, whose sum is σ = 1001345244. Its totient is φ = 1001345242.

The previous prime is 1001345207. The next prime is 1001345249. The reversal of 1001345243 is 3425431001.

It is a strong prime.

It is an emirp because it is prime and its reverse (3425431001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1001345243 - 2⁶ = 1001345179 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001345249) 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 as a sum of consecutive naturals, namely, 500672621 + 500672622.

It is an arithmetic number, because the mean of its divisors is an integer number (500672622).

Almost surely, 2^1001345243 is an apocalyptic number.

1001345243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001345243 is an equidigital number, since it uses as much as digits as its factorization.

1001345243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1001345243 is about 31644.0396125400. The cubic root of 1001345243 is about 1000.4482134081.

Adding to 1001345243 its reverse (3425431001), we get a palindrome (4426776244).

The spelling of 1001345243 in words is "one billion, one million, three hundred forty-five thousand, two hundred forty-three".