3243145 has 4 divisors (see below), whose sum is σ = 3891780. Its totient is φ = 2594512.

The previous prime is 3243143. The next prime is 3243169. The reversal of 3243145 is 5413423.

3243145 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 an emirpimes, since its reverse is a distinct semiprime: 5413423 = 19 ⋅284917.

It can be written as a sum of positive squares in 2 ways, for example, as 447561 + 2795584 = 669^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243145 - 2¹ = 3243143 is a prime.

3243145 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3243143) 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, 324310 + ... + 324319.

It is an arithmetic number, because the mean of its divisors is an integer number (972945).

Almost surely, 2^3243145 is an apocalyptic number.

It is an amenable number.

3243145 is a deficient number, since it is larger than the sum of its proper divisors (648635).

3243145 is an equidigital number, since it uses as much as digits as its factorization.

3243145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648634.

The product of its digits is 1440, while the sum is 22.

The square root of 3243145 is about 1800.8733992149. The cubic root of 3243145 is about 148.0205869828.

Adding to 3243145 its reverse (5413423), we get a palindrome (8656568).

The spelling of 3243145 in words is "three million, two hundred forty-three thousand, one hundred forty-five".