71315771 has 8 divisors (see below), whose sum is σ = 72876288. Its totient is φ = 69768000.

The previous prime is 71315753. The next prime is 71315809. The reversal of 71315771 is 17751317.

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 71315771 - 2¹⁴ = 71299387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71315171) 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, 8591 + ... + 14711.

It is an arithmetic number, because the mean of its divisors is an integer number (9109536).

Almost surely, 2^71315771 is an apocalyptic number.

71315771 is a deficient number, since it is larger than the sum of its proper divisors (1560517).

71315771 is a wasteful number, since it uses less digits than its factorization.

71315771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373.

The product of its digits is 5145, while the sum is 32.

The square root of 71315771 is about 8444.8665471990. The cubic root of 71315771 is about 414.6947404367.

The spelling of 71315771 in words is "seventy-one million, three hundred fifteen thousand, seven hundred seventy-one".