3143405 has 4 divisors (see below), whose sum is σ = 3772092. Its totient is φ = 2514720.

The previous prime is 3143401. The next prime is 3143411. The reversal of 3143405 is 5043413.

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 872356 + 2271049 = 934^2 + 1507^2 .

It is not a de Polignac number, because 3143405 - 2² = 3143401 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314336 + ... + 314345.

It is an arithmetic number, because the mean of its divisors is an integer number (943023).

Almost surely, 2^3143405 is an apocalyptic number.

It is an amenable number.

3143405 is a deficient number, since it is larger than the sum of its proper divisors (628687).

3143405 is an equidigital number, since it uses as much as digits as its factorization.

3143405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628686.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3143405 is about 1772.9650306760. The cubic root of 3143405 is about 146.4873468476.

Adding to 3143405 its reverse (5043413), we get a palindrome (8186818).

The spelling of 3143405 in words is "three million, one hundred forty-three thousand, four hundred five".