2150309 has 4 divisors (see below), whose sum is σ = 2457504. Its totient is φ = 1843116.

The previous prime is 2150303. The next prime is 2150333. The reversal of 2150309 is 9030512.

2150309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 2150309 - 2¹² = 2146213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153587 + ... + 153600.

It is an arithmetic number, because the mean of its divisors is an integer number (614376).

2^2150309 is an apocalyptic number.

It is an amenable number.

2150309 is a deficient number, since it is larger than the sum of its proper divisors (307195).

2150309 is an equidigital number, since it uses as much as digits as its factorization.

2150309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307194.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 2150309 is about 1466.3931942013. The cubic root of 2150309 is about 129.0724709469.

The spelling of 2150309 in words is "two million, one hundred fifty thousand, three hundred nine".