2143131 has 4 divisors (see below), whose sum is σ = 2857512. Its totient is φ = 1428752.

The previous prime is 2143109. The next prime is 2143147. The reversal of 2143131 is 1313412.

2143131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2143131 - 2²¹ = 45979 is a prime.

It is a super-2 number, since 2×2143131² = 9186020966322, which contains 22 as substring.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143131.

It is not an unprimeable number, because it can be changed into a prime (2143231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357186 + ... + 357191.

It is an arithmetic number, because the mean of its divisors is an integer number (714378).

2^2143131 is an apocalyptic number.

2143131 is a deficient number, since it is larger than the sum of its proper divisors (714381).

2143131 is an equidigital number, since it uses as much as digits as its factorization.

2143131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714380.

The product of its digits is 72, while the sum is 15.

The square root of 2143131 is about 1463.9436464564. The cubic root of 2143131 is about 128.9286908333.

Adding to 2143131 its reverse (1313412), we get a palindrome (3456543).

The spelling of 2143131 in words is "two million, one hundred forty-three thousand, one hundred thirty-one".