71308229 has 2 divisors, whose sum is σ = 71308230. Its totient is φ = 71308228.

The previous prime is 71308219. The next prime is 71308231. The reversal of 71308229 is 92280317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44289025 + 27019204 = 6655^2 + 5198^2 .

It is a cyclic number.

It is not a de Polignac number, because 71308229 - 2²⁴ = 54531013 is a prime.

Together with 71308231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71308195 and 71308204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71308219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35654114 + 35654115.

It is an arithmetic number, because the mean of its divisors is an integer number (35654115).

Almost surely, 2^71308229 is an apocalyptic number.

It is an amenable number.

71308229 is a deficient number, since it is larger than the sum of its proper divisors (1).

71308229 is an equidigital number, since it uses as much as digits as its factorization.

71308229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 71308229 is about 8444.4199919237. The cubic root of 71308229 is about 414.6801212393.

The spelling of 71308229 in words is "seventy-one million, three hundred eight thousand, two hundred twenty-nine".