3143209 has 2 divisors, whose sum is σ = 3143210. Its totient is φ = 3143208.

The previous prime is 3143197. The next prime is 3143243. The reversal of 3143209 is 9023413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1617984 + 1525225 = 1272^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3143209 - 2¹³ = 3135017 is a prime.

It is a Chen prime.

3143209 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3143209.

It is not a weakly prime, because it can be changed into another prime (3143299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1571604 + 1571605.

It is an arithmetic number, because the mean of its divisors is an integer number (1571605).

Almost surely, 2^3143209 is an apocalyptic number.

It is an amenable number.

3143209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3143209 is an equidigital number, since it uses as much as digits as its factorization.

3143209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 3143209 is about 1772.9097551765. The cubic root of 3143209 is about 146.4843021538.

The spelling of 3143209 in words is "three million, one hundred forty-three thousand, two hundred nine".