71113243 has 2 divisors, whose sum is σ = 71113244. Its totient is φ = 71113242.

The previous prime is 71113187. The next prime is 71113253. The reversal of 71113243 is 34231117.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71113243 - 2¹³ = 71105051 is a prime.

It is not a weakly prime, because it can be changed into another prime (71113253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35556621 + 35556622.

It is an arithmetic number, because the mean of its divisors is an integer number (35556622).

Almost surely, 2^71113243 is an apocalyptic number.

71113243 is a deficient number, since it is larger than the sum of its proper divisors (1).

71113243 is an equidigital number, since it uses as much as digits as its factorization.

71113243 is an odious number, because the sum of its binary digits is odd.

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

The square root of 71113243 is about 8432.8668316297. The cubic root of 71113243 is about 414.3018075907.

The spelling of 71113243 in words is "seventy-one million, one hundred thirteen thousand, two hundred forty-three".