3218331 has 8 divisors (see below), whose sum is σ = 4308480. Its totient is φ = 2136872.

The previous prime is 3218323. The next prime is 3218357. The reversal of 3218331 is 1338123.

It is a happy number.

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 3218331 - 2³ = 3218323 is a prime.

It is a super-2 number, since 2×3218331² = 20715308851122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3218298 and 3218307.

It is not an unprimeable number, because it can be changed into a prime (3218311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1251 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (538560).

Almost surely, 2^3218331 is an apocalyptic number.

3218331 is a deficient number, since it is larger than the sum of its proper divisors (1090149).

3218331 is a wasteful number, since it uses less digits than its factorization.

3218331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345.

The product of its digits is 432, while the sum is 21.

The square root of 3218331 is about 1793.9707355473. The cubic root of 3218331 is about 147.6421076094.

The spelling of 3218331 in words is "three million, two hundred eighteen thousand, three hundred thirty-one".