3281281 has 8 divisors (see below), whose sum is σ = 3470720. Its totient is φ = 3093552.

The previous prime is 3281273. The next prime is 3281293. The reversal of 3281281 is 1821823.

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 3281281 - 2³ = 3281273 is a prime.

It is a super-2 number, since 2×3281281² = 21533610001922, which contains 22 as substring.

It is a Duffinian number.

3281281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3281081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6856 + ... + 7318.

It is an arithmetic number, because the mean of its divisors is an integer number (433840).

Almost surely, 2^3281281 is an apocalyptic number.

It is an amenable number.

3281281 is a deficient number, since it is larger than the sum of its proper divisors (189439).

3281281 is a wasteful number, since it uses less digits than its factorization.

3281281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855.

The product of its digits is 768, while the sum is 25.

The square root of 3281281 is about 1811.4306500664. The cubic root of 3281281 is about 148.5985167835.

The spelling of 3281281 in words is "three million, two hundred eighty-one thousand, two hundred eighty-one".