71131678 has 8 divisors (see below), whose sum is σ = 106760160. Its totient is φ = 35544960.

The previous prime is 71131667. The next prime is 71131703. The reversal of 71131678 is 87613117.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5763 + ... + 13246.

It is an arithmetic number, because the mean of its divisors is an integer number (13345020).

Almost surely, 2^71131678 is an apocalyptic number.

71131678 is a deficient number, since it is larger than the sum of its proper divisors (35628482).

71131678 is a wasteful number, since it uses less digits than its factorization.

71131678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20882.

The product of its digits is 7056, while the sum is 34.

The square root of 71131678 is about 8433.9598054532. The cubic root of 71131678 is about 414.3376049266.

The spelling of 71131678 in words is "seventy-one million, one hundred thirty-one thousand, six hundred seventy-eight".