330881 has 4 divisors (see below), whose sum is σ = 332100. Its totient is φ = 329664.

The previous prime is 330877. The next prime is 330887. The reversal of 330881 is 188033.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 188033 = 59 ⋅3187.

It can be written as a sum of positive squares in 2 ways, for example, as 297025 + 33856 = 545^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 330881 - 2² = 330877 is a prime.

It is a super-2 number, since 2×330881² = 218964472322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330887) 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, 5 + ... + 813.

It is an arithmetic number, because the mean of its divisors is an integer number (83025).

2³³⁰⁸⁸¹ is an apocalyptic number.

It is an amenable number.

330881 is a deficient number, since it is larger than the sum of its proper divisors (1219).

330881 is an equidigital number, since it uses as much as digits as its factorization.

330881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 330881 is about 575.2225656213. Note that the first 3 decimals coincide. The cubic root of 330881 is about 69.1656734426.

The spelling of 330881 in words is "three hundred thirty thousand, eight hundred eighty-one".