71000006213 has 2 divisors, whose sum is σ = 71000006214. Its totient is φ = 71000006212.

The previous prime is 71000006179. The next prime is 71000006237. The reversal of 71000006213 is 31260000017.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70832096449 + 167909764 = 266143^2 + 12958^2 .

It is a cyclic number.

It is not a de Polignac number, because 71000006213 - 2⁸ = 71000005957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71000003213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35500003106 + 35500003107.

It is an arithmetic number, because the mean of its divisors is an integer number (35500003107).

Almost surely, 2^71000006213 is an apocalyptic number.

It is an amenable number.

71000006213 is a deficient number, since it is larger than the sum of its proper divisors (1).

71000006213 is an equidigital number, since it uses as much as digits as its factorization.

71000006213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The spelling of 71000006213 in words is "seventy-one billion, six thousand, two hundred thirteen".