73071109 has 2 divisors, whose sum is σ = 73071110. Its totient is φ = 73071108.

The previous prime is 73071091. The next prime is 73071113. The reversal of 73071109 is 90117037.

It is a happy number.

Together with previous prime (73071091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47568609 + 25502500 = 6897^2 + 5050^2 .

It is an emirp because it is prime and its reverse (90117037) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73071109 - 2⁵ = 73071077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73071139) 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, 36535554 + 36535555.

It is an arithmetic number, because the mean of its divisors is an integer number (36535555).

Almost surely, 2^73071109 is an apocalyptic number.

It is an amenable number.

73071109 is a deficient number, since it is larger than the sum of its proper divisors (1).

73071109 is an equidigital number, since it uses as much as digits as its factorization.

73071109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1323, while the sum is 28.

The square root of 73071109 is about 8548.1640718929. The cubic root of 73071109 is about 418.0695781707.

The spelling of 73071109 in words is "seventy-three million, seventy-one thousand, one hundred nine".