80311021 has 8 divisors (see below), whose sum is σ = 92597184. Its totient is φ = 68228160.

The previous prime is 80311001. The next prime is 80311039. The reversal of 80311021 is 12011308.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80311021 - 2⁹ = 80310509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 80310986 and 80311004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80311001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49975 + ... + 51556.

It is an arithmetic number, because the mean of its divisors is an integer number (11574648).

Almost surely, 2^80311021 is an apocalyptic number.

It is an amenable number.

80311021 is a deficient number, since it is larger than the sum of its proper divisors (12286163).

80311021 is a wasteful number, since it uses less digits than its factorization.

80311021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101651.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 80311021 is about 8961.6416464842. The cubic root of 80311021 is about 431.4446112889. Note that the first 3 decimals are identical.

Adding to 80311021 its reverse (12011308), we get a palindrome (92322329).

The spelling of 80311021 in words is "eighty million, three hundred eleven thousand, twenty-one".