3124309 has 4 divisors (see below), whose sum is σ = 3134080. Its totient is φ = 3114540.

The previous prime is 3124307. The next prime is 3124313. The reversal of 3124309 is 9034213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9034213 = 67 ⋅134839.

It is a cyclic number.

It is not a de Polignac number, because 3124309 - 2¹ = 3124307 is a prime.

It is a super-2 number, since 2×3124309² = 19522613454962, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3124309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124301) 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 3 ways as a sum of consecutive naturals, for example, 4389 + ... + 5050.

It is an arithmetic number, because the mean of its divisors is an integer number (783520).

Almost surely, 2^3124309 is an apocalyptic number.

It is an amenable number.

3124309 is a deficient number, since it is larger than the sum of its proper divisors (9771).

3124309 is an equidigital number, since it uses as much as digits as its factorization.

3124309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9770.

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

The square root of 3124309 is about 1767.5714978467. The cubic root of 3124309 is about 146.1901101362.

The spelling of 3124309 in words is "three million, one hundred twenty-four thousand, three hundred nine".