71351287 has 8 divisors (see below), whose sum is σ = 81635616. Its totient is φ = 61089792.

The previous prime is 71351279. The next prime is 71351317. The reversal of 71351287 is 78215317.

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 71351287 - 2³ = 71351279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71351257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1623 + ... + 12055.

It is an arithmetic number, because the mean of its divisors is an integer number (10204452).

Almost surely, 2^71351287 is an apocalyptic number.

71351287 is a deficient number, since it is larger than the sum of its proper divisors (10284329).

71351287 is a wasteful number, since it uses less digits than its factorization.

71351287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11417.

The product of its digits is 11760, while the sum is 34.

The square root of 71351287 is about 8446.9691013996. The cubic root of 71351287 is about 414.7635697850.

The spelling of 71351287 in words is "seventy-one million, three hundred fifty-one thousand, two hundred eighty-seven".