71316919 has 4 divisors (see below), whose sum is σ = 72975496. Its totient is φ = 69658344.

The previous prime is 71316911. The next prime is 71316941. The reversal of 71316919 is 91961317.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 71316919 - 2³ = 71316911 is a prime.

It is a super-2 number, since 2×71316919² = 10172205871305122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71316911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 829224 + ... + 829309.

It is an arithmetic number, because the mean of its divisors is an integer number (18243874).

Almost surely, 2^71316919 is an apocalyptic number.

71316919 is a deficient number, since it is larger than the sum of its proper divisors (1658577).

71316919 is a wasteful number, since it uses less digits than its factorization.

71316919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658576.

The product of its digits is 10206, while the sum is 37.

The square root of 71316919 is about 8444.9345172121. The cubic root of 71316919 is about 414.6969655967.

The spelling of 71316919 in words is "seventy-one million, three hundred sixteen thousand, nine hundred nineteen".