3218215 has 32 divisors (see below), whose sum is σ = 5193216. Its totient is φ = 1848960.

The previous prime is 3218209. The next prime is 3218221. The reversal of 3218215 is 5128123.

3218215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3218209) and next prime (3218221).

It is not a de Polignac number, because 3218215 - 2³ = 3218207 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 4684 + ... + 5326.

It is an arithmetic number, because the mean of its divisors is an integer number (162288).

Almost surely, 2^3218215 is an apocalyptic number.

3218215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

3218215 is a deficient number, since it is larger than the sum of its proper divisors (1975001).

3218215 is a wasteful number, since it uses less digits than its factorization.

3218215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679.

The product of its digits is 480, while the sum is 22.

The square root of 3218215 is about 1793.9384047397. The cubic root of 3218215 is about 147.6403337407.

The spelling of 3218215 in words is "three million, two hundred eighteen thousand, two hundred fifteen".