71321016 has 32 divisors (see below), whose sum is σ = 192018960. Its totient is φ = 21944832.

The previous prime is 71320993. The next prime is 71321021. The reversal of 71321016 is 61012317.

It is a junction number, because it is equal to n+sod(n) for n = 71320983 and 71321001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113985 + ... + 114608.

Almost surely, 2^71321016 is an apocalyptic number.

It is an amenable number.

71321016 is an abundant number, since it is smaller than the sum of its proper divisors (120697944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71321016 is a wasteful number, since it uses less digits than its factorization.

71321016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228615 (or 228611 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 71321016 is about 8445.1770851771. The cubic root of 71321016 is about 414.7049065872.

The spelling of 71321016 in words is "seventy-one million, three hundred twenty-one thousand, sixteen".