80731 has 8 divisors (see below), whose sum is σ = 97280. Its totient is φ = 65448.

The previous prime is 80713. The next prime is 80737. The reversal of 80731 is 13708.

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

It is a cyclic number.

It is not a de Polignac number, because 80731 - 2⁷ = 80603 is a prime.

It is a super-2 number, since 2×80731² = 13034988722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 80699 and 80708.

It is not an unprimeable number, because it can be changed into a prime (80737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171 + ... + 436.

It is an arithmetic number, because the mean of its divisors is an integer number (12160).

2⁸⁰⁷³¹ is an apocalyptic number.

80731 is a deficient number, since it is larger than the sum of its proper divisors (16549).

80731 is a wasteful number, since it uses less digits than its factorization.

80731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 80731 is about 284.1320115721. The cubic root of 80731 is about 43.2195370593.

It can be divided in two parts, 807 and 31, that added together give a palindrome (838).

The spelling of 80731 in words is "eighty thousand, seven hundred thirty-one".