3140209 has 2 divisors, whose sum is σ = 3140210. Its totient is φ = 3140208.

The previous prime is 3140183. The next prime is 3140233. The reversal of 3140209 is 9020413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3139984 + 225 = 1772^2 + 15^2 .

It is an emirp because it is prime and its reverse (9020413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3140209 - 2¹⁵ = 3107441 is a prime.

It is not a weakly prime, because it can be changed into another prime (3140299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1570104 + 1570105.

It is an arithmetic number, because the mean of its divisors is an integer number (1570105).

Almost surely, 2^3140209 is an apocalyptic number.

It is an amenable number.

3140209 is a deficient number, since it is larger than the sum of its proper divisors (1).

3140209 is an equidigital number, since it uses as much as digits as its factorization.

3140209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 3140209 is about 1772.0634864474. The cubic root of 3140209 is about 146.4376838951.

The spelling of 3140209 in words is "three million, one hundred forty thousand, two hundred nine".