3281143 has 4 divisors (see below), whose sum is σ = 3302200. Its totient is φ = 3260088.

The previous prime is 3281141. The next prime is 3281149. The reversal of 3281143 is 3411823.

3281143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3281143 - 2¹ = 3281141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10293 + ... + 10606.

It is an arithmetic number, because the mean of its divisors is an integer number (825550).

Almost surely, 2^3281143 is an apocalyptic number.

3281143 is a deficient number, since it is larger than the sum of its proper divisors (21057).

3281143 is a wasteful number, since it uses less digits than its factorization.

3281143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21056.

The product of its digits is 576, while the sum is 22.

The square root of 3281143 is about 1811.3925582270. The cubic root of 3281143 is about 148.5964335643.

Adding to 3281143 its reverse (3411823), we get a palindrome (6692966).

The spelling of 3281143 in words is "three million, two hundred eighty-one thousand, one hundred forty-three".