71299213 has 2 divisors, whose sum is σ = 71299214. Its totient is φ = 71299212.

The previous prime is 71299211. The next prime is 71299231. The reversal of 71299213 is 31299217.

It is a happy number.

Together with next prime (71299231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67601284 + 3697929 = 8222^2 + 1923^2 .

It is a cyclic number.

It is not a de Polignac number, because 71299213 - 2¹ = 71299211 is a prime.

Together with 71299211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71299211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35649606 + 35649607.

It is an arithmetic number, because the mean of its divisors is an integer number (35649607).

Almost surely, 2^71299213 is an apocalyptic number.

It is an amenable number.

71299213 is a deficient number, since it is larger than the sum of its proper divisors (1).

71299213 is an equidigital number, since it uses as much as digits as its factorization.

71299213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 71299213 is about 8443.8861313971. The cubic root of 71299213 is about 414.6626435297.

The spelling of 71299213 in words is "seventy-one million, two hundred ninety-nine thousand, two hundred thirteen".