80381 has 4 divisors (see below), whose sum is σ = 91872. Its totient is φ = 68892.

The previous prime is 80369. The next prime is 80387. The reversal of 80381 is 18308.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 80381 - 2⁶ = 80317 is a prime.

It is a super-2 number, since 2×80381² = 12922210322, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80387) 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, 5735 + ... + 5748.

It is an arithmetic number, because the mean of its divisors is an integer number (22968).

2⁸⁰³⁸¹ is an apocalyptic number.

It is an amenable number.

80381 is a deficient number, since it is larger than the sum of its proper divisors (11491).

80381 is a wasteful number, since it uses less digits than its factorization.

80381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11490.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 80381 is about 283.5154316788. The cubic root of 80381 is about 43.1569887982.

Adding to 80381 its reverse (18308), we get a palindrome (98689).

The spelling of 80381 in words is "eighty thousand, three hundred eighty-one".