71413213 has 2 divisors, whose sum is σ = 71413214. Its totient is φ = 71413212.

The previous prime is 71413201. The next prime is 71413217. The reversal of 71413213 is 31231417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35736484 + 35676729 = 5978^2 + 5973^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71413213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71413217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35706606 + 35706607.

It is an arithmetic number, because the mean of its divisors is an integer number (35706607).

Almost surely, 2^71413213 is an apocalyptic number.

It is an amenable number.

71413213 is a deficient number, since it is larger than the sum of its proper divisors (1).

71413213 is an equidigital number, since it uses as much as digits as its factorization.

71413213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 22.

The square root of 71413213 is about 8450.6338815500. The cubic root of 71413213 is about 414.8835266112.

The spelling of 71413213 in words is "seventy-one million, four hundred thirteen thousand, two hundred thirteen".