71310073 has 2 divisors, whose sum is σ = 71310074. Its totient is φ = 71310072.

The previous prime is 71310067. The next prime is 71310077. The reversal of 71310073 is 37001317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40806544 + 30503529 = 6388^2 + 5523^2 .

It is a cyclic number.

It is not a de Polignac number, because 71310073 - 2¹⁷ = 71179001 is a prime.

It is a super-2 number, since 2×71310073² = 10170253022530658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (71310077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35655036 + 35655037.

It is an arithmetic number, because the mean of its divisors is an integer number (35655037).

Almost surely, 2^71310073 is an apocalyptic number.

It is an amenable number.

71310073 is a deficient number, since it is larger than the sum of its proper divisors (1).

71310073 is an equidigital number, since it uses as much as digits as its factorization.

71310073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 441, while the sum is 22.

The square root of 71310073 is about 8444.5291757445. The cubic root of 71310073 is about 414.6836956914.

The spelling of 71310073 in words is "seventy-one million, three hundred ten thousand, seventy-three".