329281 has 2 divisors, whose sum is σ = 329282. Its totient is φ = 329280.

The previous prime is 329269. The next prime is 329293. The reversal of 329281 is 182923.

It is a balanced prime because it is at equal distance from previous prime (329269) and next prime (329293).

It can be written as a sum of positive squares in only one way, i.e., 176400 + 152881 = 420^2 + 391^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-329281 is a prime.

It is a super-2 number, since 2×329281² = 216851953922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (329201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164640 + 164641.

It is an arithmetic number, because the mean of its divisors is an integer number (164641).

2³²⁹²⁸¹ is an apocalyptic number.

It is an amenable number.

329281 is a deficient number, since it is larger than the sum of its proper divisors (1).

329281 is an equidigital number, since it uses as much as digits as its factorization.

329281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 329281 is about 573.8301142324. The cubic root of 329281 is about 69.0540079852.

The spelling of 329281 in words is "three hundred twenty-nine thousand, two hundred eighty-one".