71143216 has 10 divisors (see below), whose sum is σ = 137840012. Its totient is φ = 35571600.

The previous prime is 71143211. The next prime is 71143217. The reversal of 71143216 is 61234117.

It is a super-2 number, since 2×71143216² = 10122714365645312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (71143211) by changing a digit.

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 as a sum of consecutive naturals, namely, 2223210 + ... + 2223241.

Almost surely, 2^71143216 is an apocalyptic number.

It is an amenable number.

71143216 is a deficient number, since it is larger than the sum of its proper divisors (66696796).

71143216 is a wasteful number, since it uses less digits than its factorization.

71143216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446459 (or 4446453 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 71143216 is about 8434.6437980510. The cubic root of 71143216 is about 414.3600064264.

Subtracting from 71143216 its reverse (61234117), we obtain a palindrome (9909099).

The spelling of 71143216 in words is "seventy-one million, one hundred forty-three thousand, two hundred sixteen".