4313509 has 2 divisors, whose sum is σ = 4313510. Its totient is φ = 4313508.

The previous prime is 4313503. The next prime is 4313531. The reversal of 4313509 is 9053134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4264225 + 49284 = 2065^2 + 222^2 .

It is a cyclic number.

It is not a de Polignac number, because 4313509 - 2³ = 4313501 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4313501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156754 + 2156755.

It is an arithmetic number, because the mean of its divisors is an integer number (2156755).

Almost surely, 2^4313509 is an apocalyptic number.

It is an amenable number.

4313509 is a deficient number, since it is larger than the sum of its proper divisors (1).

4313509 is an equidigital number, since it uses as much as digits as its factorization.

4313509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 4313509 is about 2076.8988901726. The cubic root of 4313509 is about 162.7834453442.

The spelling of 4313509 in words is "four million, three hundred thirteen thousand, five hundred nine".