3143239 has 4 divisors (see below), whose sum is σ = 3429000. Its totient is φ = 2857480.

The previous prime is 3143209. The next prime is 3143243. The reversal of 3143239 is 9323413.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3143239 is a prime.

It is a super-4 number, since 4×3143239⁴ (a number of 27 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143209) 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, 142864 + ... + 142885.

It is an arithmetic number, because the mean of its divisors is an integer number (857250).

Almost surely, 2^3143239 is an apocalyptic number.

3143239 is a deficient number, since it is larger than the sum of its proper divisors (285761).

3143239 is a wasteful number, since it uses less digits than its factorization.

3143239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285760.

The product of its digits is 1944, while the sum is 25.

The square root of 3143239 is about 1772.9182158238. The cubic root of 3143239 is about 146.4847681866.

It can be divided in two parts, 314 and 3239, that added together give a palindrome (3553).

The spelling of 3143239 in words is "three million, one hundred forty-three thousand, two hundred thirty-nine".