71031308 has 12 divisors (see below), whose sum is σ = 125467272. Its totient is φ = 35183520.

The previous prime is 71031307. The next prime is 71031343. The reversal of 71031308 is 80313017.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71031307) 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 in 3 ways as a sum of consecutive naturals, for example, 82553 + ... + 83408.

It is an arithmetic number, because the mean of its divisors is an integer number (10455606).

Almost surely, 2^71031308 is an apocalyptic number.

It is an amenable number.

71031308 is a deficient number, since it is larger than the sum of its proper divisors (54435964).

71031308 is a wasteful number, since it uses less digits than its factorization.

71031308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166072 (or 166070 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 71031308 is about 8428.0073564277. The cubic root of 71031308 is about 414.1426301871.

The spelling of 71031308 in words is "seventy-one million, thirty-one thousand, three hundred eight".