71280317 has 8 divisors (see below), whose sum is σ = 72428160. Its totient is φ = 70139520.

The previous prime is 71280311. The next prime is 71280331. The reversal of 71280317 is 71308217.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71280317 - 2⁴ = 71280301 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71280317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71280311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20909 + ... + 24077.

It is an arithmetic number, because the mean of its divisors is an integer number (9053520).

Almost surely, 2^71280317 is an apocalyptic number.

It is an amenable number.

71280317 is a deficient number, since it is larger than the sum of its proper divisors (1147843).

71280317 is a wasteful number, since it uses less digits than its factorization.

71280317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3523.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 71280317 is about 8442.7671411688. The cubic root of 71280317 is about 414.6260084474.

The spelling of 71280317 in words is "seventy-one million, two hundred eighty thousand, three hundred seventeen".