3144985 has 4 divisors (see below), whose sum is σ = 3773988. Its totient is φ = 2515984.

The previous prime is 3144971. The next prime is 3144989. The reversal of 3144985 is 5894413.

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 1806336 + 1338649 = 1344^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 3144985 - 2²¹ = 1047833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3144985.

It is not an unprimeable number, because it can be changed into a prime (3144989) 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, 314494 + ... + 314503.

It is an arithmetic number, because the mean of its divisors is an integer number (943497).

Almost surely, 2^3144985 is an apocalyptic number.

It is an amenable number.

3144985 is a deficient number, since it is larger than the sum of its proper divisors (629003).

3144985 is an equidigital number, since it uses as much as digits as its factorization.

3144985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629002.

The product of its digits is 17280, while the sum is 34.

The square root of 3144985 is about 1773.4105559627. The cubic root of 3144985 is about 146.5118861863.

The spelling of 3144985 in words is "three million, one hundred forty-four thousand, nine hundred eighty-five".