3144385 has 4 divisors (see below), whose sum is σ = 3773268. Its totient is φ = 2515504.

The previous prime is 3144373. The next prime is 3144389. The reversal of 3144385 is 5834413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5834413 = 13 ⋅448801.

It can be written as a sum of positive squares in 2 ways, for example, as 1495729 + 1648656 = 1223^2 + 1284^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144385 - 2⁷ = 3144257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3144389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314434 + ... + 314443.

It is an arithmetic number, because the mean of its divisors is an integer number (943317).

Almost surely, 2^3144385 is an apocalyptic number.

It is an amenable number.

3144385 is a deficient number, since it is larger than the sum of its proper divisors (628883).

3144385 is an equidigital number, since it uses as much as digits as its factorization.

3144385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628882.

The product of its digits is 5760, while the sum is 28.

The square root of 3144385 is about 1773.2413823279. The cubic root of 3144385 is about 146.5025684182.

Adding to 3144385 its sum of digits (28), we get a palindrome (3144413).

Adding to 3144385 its reverse (5834413), we get a palindrome (8978798).

The spelling of 3144385 in words is "three million, one hundred forty-four thousand, three hundred eighty-five".