3218143 has 2 divisors, whose sum is σ = 3218144. Its totient is φ = 3218142.

The previous prime is 3218123. The next prime is 3218153. The reversal of 3218143 is 3418123.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3218143 - 2¹³ = 3209951 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3218123) 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 as a sum of consecutive naturals, namely, 1609071 + 1609072.

It is an arithmetic number, because the mean of its divisors is an integer number (1609072).

Almost surely, 2^3218143 is an apocalyptic number.

3218143 is a deficient number, since it is larger than the sum of its proper divisors (1).

3218143 is an equidigital number, since it uses as much as digits as its factorization.

3218143 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 22.

The square root of 3218143 is about 1793.9183370488. The cubic root of 3218143 is about 147.6392326973.

It can be divided in two parts, 321 and 8143, that added together give a square (8464 = 92²).

The spelling of 3218143 in words is "three million, two hundred eighteen thousand, one hundred forty-three".