3133218 has 32 divisors (see below), whose sum is σ = 7076160. Its totient is φ = 916160.

The previous prime is 3133213. The next prime is 3133237. The reversal of 3133218 is 8123313.

3133218 = T₁₇₂ + T₁₇₃ + ... + T₂₈₇.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3133194 and 3133203.

It is not an unprimeable number, because it can be changed into a prime (3133211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1096 + ... + 2732.

It is an arithmetic number, because the mean of its divisors is an integer number (221130).

Almost surely, 2^3133218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3133218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3538080).

3133218 is an abundant number, since it is smaller than the sum of its proper divisors (3942942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3133218 is a wasteful number, since it uses less digits than its factorization.

3133218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1682.

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

The square root of 3133218 is about 1770.0898282291. The cubic root of 3133218 is about 146.3289324812.

The spelling of 3133218 in words is "three million, one hundred thirty-three thousand, two hundred eighteen".