3131143 has 8 divisors (see below), whose sum is σ = 3315200. Its totient is φ = 2949048.

The previous prime is 3131137. The next prime is 3131153. The reversal of 3131143 is 3411313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3131143 is a prime.

It is a Duffinian number.

3131143 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3131113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3868 + ... + 4606.

It is an arithmetic number, because the mean of its divisors is an integer number (414400).

Almost surely, 2^3131143 is an apocalyptic number.

3131143 is a deficient number, since it is larger than the sum of its proper divisors (184057).

3131143 is a wasteful number, since it uses less digits than its factorization.

3131143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981.

The product of its digits is 108, while the sum is 16.

The square root of 3131143 is about 1769.5036027090. The cubic root of 3131143 is about 146.2966228252.

Adding to 3131143 its reverse (3411313), we get a palindrome (6542456).

The spelling of 3131143 in words is "three million, one hundred thirty-one thousand, one hundred forty-three".