1301071243 has 2 divisors, whose sum is σ = 1301071244. Its totient is φ = 1301071242.

The previous prime is 1301071229. The next prime is 1301071351. The reversal of 1301071243 is 3421701031.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1301071243 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301071223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650535621 + 650535622.

It is an arithmetic number, because the mean of its divisors is an integer number (650535622).

Almost surely, 2^1301071243 is an apocalyptic number.

1301071243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301071243 is an equidigital number, since it uses as much as digits as its factorization.

1301071243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1301071243 is about 36070.3651631086. The cubic root of 1301071243 is about 1091.6925820341.

Adding to 1301071243 its reverse (3421701031), we get a palindrome (4722772274).

The spelling of 1301071243 in words is "one billion, three hundred one million, seventy-one thousand, two hundred forty-three".