3281993 has 16 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 2700480.

The previous prime is 3281987. The next prime is 3282029. The reversal of 3281993 is 3991823.

It is a cyclic number.

It is not a de Polignac number, because 3281993 - 2¹⁰ = 3280969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3281933) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8243 + ... + 8631.

It is an arithmetic number, because the mean of its divisors is an integer number (245700).

Almost surely, 2^3281993 is an apocalyptic number.

It is an amenable number.

3281993 is a deficient number, since it is larger than the sum of its proper divisors (649207).

3281993 is a wasteful number, since it uses less digits than its factorization.

3281993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472.

The product of its digits is 11664, while the sum is 35.

The square root of 3281993 is about 1811.6271691493. The cubic root of 3281993 is about 148.6092640590.

The spelling of 3281993 in words is "three million, two hundred eighty-one thousand, nine hundred ninety-three".