71191301 has 2 divisors, whose sum is σ = 71191302. Its totient is φ = 71191300.

The previous prime is 71191297. The next prime is 71191303. The reversal of 71191301 is 10319117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 7431076 = 7985^2 + 2726^2 .

It is an emirp because it is prime and its reverse (10319117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71191301 - 2² = 71191297 is a prime.

Together with 71191303, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71191303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35595650 + 35595651.

It is an arithmetic number, because the mean of its divisors is an integer number (35595651).

Almost surely, 2^71191301 is an apocalyptic number.

It is an amenable number.

71191301 is a deficient number, since it is larger than the sum of its proper divisors (1).

71191301 is an equidigital number, since it uses as much as digits as its factorization.

71191301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 189, while the sum is 23.

The square root of 71191301 is about 8437.4937629607. The cubic root of 71191301 is about 414.4533393530.

The spelling of 71191301 in words is "seventy-one million, one hundred ninety-one thousand, three hundred one".