80321871 has 16 divisors (see below), whose sum is σ = 124706304. Its totient is φ = 45031584.

The previous prime is 80321861. The next prime is 80321897. The reversal of 80321871 is 17812308.

It is a happy number.

It is not a de Polignac number, because 80321871 - 2¹⁵ = 80289103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80321831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34971 + ... + 37196.

It is an arithmetic number, because the mean of its divisors is an integer number (7794144).

Almost surely, 2^80321871 is an apocalyptic number.

80321871 is a deficient number, since it is larger than the sum of its proper divisors (44384433).

80321871 is a wasteful number, since it uses less digits than its factorization.

80321871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72230.

The product of its (nonzero) digits is 2688, while the sum is 30.

The square root of 80321871 is about 8962.2469838763. The cubic root of 80321871 is about 431.4640397691.

The spelling of 80321871 in words is "eighty million, three hundred twenty-one thousand, eight hundred seventy-one".