80320071 has 32 divisors (see below), whose sum is σ = 121347072. Its totient is φ = 46886400.

The previous prime is 80320067. The next prime is 80320127. The reversal of 80320071 is 17002308.

It is not a de Polignac number, because 80320071 - 2² = 80320067 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80320021) 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 31 ways as a sum of consecutive naturals, for example, 135151 + ... + 135743.

It is an arithmetic number, because the mean of its divisors is an integer number (3792096).

Almost surely, 2^80320071 is an apocalyptic number.

80320071 is a deficient number, since it is larger than the sum of its proper divisors (41027001).

80320071 is a wasteful number, since it uses less digits than its factorization.

80320071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 783.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 80320071 is about 8962.1465620687. The cubic root of 80320071 is about 431.4608167321.

Adding to 80320071 its reverse (17002308), we get a palindrome (97322379).

The spelling of 80320071 in words is "eighty million, three hundred twenty thousand, seventy-one".