2133305 has 4 divisors (see below), whose sum is σ = 2559972. Its totient is φ = 1706640.

The previous prime is 2133293. The next prime is 2133311. The reversal of 2133305 is 5033312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 674041 + 1459264 = 821^2 + 1208^2 .

It is not a de Polignac number, because 2133305 - 2⁴ = 2133289 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213326 + ... + 213335.

It is an arithmetic number, because the mean of its divisors is an integer number (639993).

2^2133305 is an apocalyptic number.

It is an amenable number.

2133305 is a deficient number, since it is larger than the sum of its proper divisors (426667).

2133305 is an equidigital number, since it uses as much as digits as its factorization.

2133305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426666.

The product of its (nonzero) digits is 270, while the sum is 17.

The square root of 2133305 is about 1460.5837873946. The cubic root of 2133305 is about 128.7313480380.

Adding to 2133305 its reverse (5033312), we get a palindrome (7166617).

The spelling of 2133305 in words is "two million, one hundred thirty-three thousand, three hundred five".