71023873 has 2 divisors, whose sum is σ = 71023874. Its totient is φ = 71023872.

The previous prime is 71023859. The next prime is 71023879. The reversal of 71023873 is 37832017.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44315649 + 26708224 = 6657^2 + 5168^2 .

It is a cyclic number.

It is not a de Polignac number, because 71023873 - 2⁹ = 71023361 is a prime.

It is not a weakly prime, because it can be changed into another prime (71023879) 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, 35511936 + 35511937.

It is an arithmetic number, because the mean of its divisors is an integer number (35511937).

Almost surely, 2^71023873 is an apocalyptic number.

It is an amenable number.

71023873 is a deficient number, since it is larger than the sum of its proper divisors (1).

71023873 is an equidigital number, since it uses as much as digits as its factorization.

71023873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 71023873 is about 8427.5662560433. The cubic root of 71023873 is about 414.1281799492.

The spelling of 71023873 in words is "seventy-one million, twenty-three thousand, eight hundred seventy-three".