3281818331 has 4 divisors (see below), whose sum is σ = 3580165464. Its totient is φ = 2983471200.

The previous prime is 3281818289. The next prime is 3281818367. The reversal of 3281818331 is 1338181823.

It is a happy number.

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 3281818331 - 2²⁶ = 3214709467 is a prime.

It is a super-2 number, since 2×3281818331² = 21540663115375251122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3281818531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149173550 + ... + 149173571.

It is an arithmetic number, because the mean of its divisors is an integer number (895041366).

Almost surely, 2^3281818331 is an apocalyptic number.

3281818331 is a deficient number, since it is larger than the sum of its proper divisors (298347133).

3281818331 is a wasteful number, since it uses less digits than its factorization.

3281818331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298347132.

The product of its digits is 27648, while the sum is 38.

The square root of 3281818331 is about 57287.1567718280. The cubic root of 3281818331 is about 1486.0662766375.

The spelling of 3281818331 in words is "three billion, two hundred eighty-one million, eight hundred eighteen thousand, three hundred thirty-one".