71308413 has 24 divisors (see below), whose sum is σ = 112638240. Its totient is φ = 43112160.

The previous prime is 71308397. The next prime is 71308423. The reversal of 71308413 is 31480317.

It is not a de Polignac number, because 71308413 - 2⁴ = 71308397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71308423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 64695 + ... + 65787.

It is an arithmetic number, because the mean of its divisors is an integer number (4693260).

Almost surely, 2^71308413 is an apocalyptic number.

It is an amenable number.

71308413 is a deficient number, since it is larger than the sum of its proper divisors (41329827).

71308413 is a wasteful number, since it uses less digits than its factorization.

71308413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1769 (or 1766 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 71308413 is about 8444.4308866850. The cubic root of 71308413 is about 414.6804779119.

The spelling of 71308413 in words is "seventy-one million, three hundred eight thousand, four hundred thirteen".