Search a number
-
+
80331 = 326777
BaseRepresentation
bin10011100111001011
311002012020
4103213023
510032311
61415523
7453126
oct234713
9132166
1080331
1155399
123a5a3
132a744
14213bd
1518c06
hex139cb

80331 has 4 divisors (see below), whose sum is σ = 107112. Its totient is φ = 53552.

The previous prime is 80329. The next prime is 80341. The reversal of 80331 is 13308.

80331 is nontrivially palindromic in base 12.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 80331 - 21 = 80329 is a prime.

It is a super-2 number, since 2×803312 = 12906139122, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 80331.

It is not an unprimeable number, because it can be changed into a prime (80341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13386 + ... + 13391.

It is an arithmetic number, because the mean of its divisors is an integer number (26778).

280331 is an apocalyptic number.

80331 is a deficient number, since it is larger than the sum of its proper divisors (26781).

80331 is a wasteful number, since it uses less digits than its factorization.

80331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26780.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 80331 is about 283.4272393402. The cubic root of 80331 is about 43.1480385197.

Adding to 80331 its reverse (13308), we get a palindrome (93639).

The spelling of 80331 in words is "eighty thousand, three hundred thirty-one".

Divisors: 1 3 26777 80331