71316229 has 2 divisors, whose sum is σ = 71316230. Its totient is φ = 71316228.

The previous prime is 71316209. The next prime is 71316247. The reversal of 71316229 is 92261317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56700900 + 14615329 = 7530^2 + 3823^2 .

It is an emirp because it is prime and its reverse (92261317) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 71316229 - 2²¹ = 69219077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71316229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71316209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35658114 + 35658115.

It is an arithmetic number, because the mean of its divisors is an integer number (35658115).

Almost surely, 2^71316229 is an apocalyptic number.

It is an amenable number.

71316229 is a deficient number, since it is larger than the sum of its proper divisors (1).

71316229 is an equidigital number, since it uses as much as digits as its factorization.

71316229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 31.

The square root of 71316229 is about 8444.8936642210. The cubic root of 71316229 is about 414.6956281776.

The spelling of 71316229 in words is "seventy-one million, three hundred sixteen thousand, two hundred twenty-nine".