3144865 has 4 divisors (see below), whose sum is σ = 3773844. Its totient is φ = 2515888.

The previous prime is 3144853. The next prime is 3144871. The reversal of 3144865 is 5684413.

It is a happy number.

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 2178576 + 966289 = 1476^2 + 983^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144865 - 2⁷ = 3144737 is a prime.

It is a Duffinian number.

It is a congruent 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, 314482 + ... + 314491.

It is an arithmetic number, because the mean of its divisors is an integer number (943461).

Almost surely, 2^3144865 is an apocalyptic number.

It is an amenable number.

3144865 is a deficient number, since it is larger than the sum of its proper divisors (628979).

3144865 is an equidigital number, since it uses as much as digits as its factorization.

3144865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 628978.

The product of its digits is 11520, while the sum is 31.

The square root of 3144865 is about 1773.3767225268. The cubic root of 3144865 is about 146.5100227275.

It can be divided in two parts, 31448 and 65, that added together give a palindrome (31513).

The spelling of 3144865 in words is "three million, one hundred forty-four thousand, eight hundred sixty-five".