71136113 has 2 divisors, whose sum is σ = 71136114. Its totient is φ = 71136112.

The previous prime is 71136073. The next prime is 71136139. The reversal of 71136113 is 31163117.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49168144 + 21967969 = 7012^2 + 4687^2 .

It is an emirp because it is prime and its reverse (31163117) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71136113 - 2⁶ = 71136049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (71136173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35568056 + 35568057.

It is an arithmetic number, because the mean of its divisors is an integer number (35568057).

Almost surely, 2^71136113 is an apocalyptic number.

It is an amenable number.

71136113 is a deficient number, since it is larger than the sum of its proper divisors (1).

71136113 is an equidigital number, since it uses as much as digits as its factorization.

71136113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 23.

The square root of 71136113 is about 8434.2227264876. Note that the first 3 decimals coincide. The cubic root of 71136113 is about 414.3462159474.

The spelling of 71136113 in words is "seventy-one million, one hundred thirty-six thousand, one hundred thirteen".