2081143 has 4 divisors (see below), whose sum is σ = 2084688. Its totient is φ = 2077600.

The previous prime is 2081129. The next prime is 2081147. The reversal of 2081143 is 3411802.

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 2081143 - 2¹⁷ = 1950071 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 2081143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2081147) 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, 658 + ... + 2143.

It is an arithmetic number, because the mean of its divisors is an integer number (521172).

2^2081143 is an apocalyptic number.

2081143 is a deficient number, since it is larger than the sum of its proper divisors (3545).

2081143 is an equidigital number, since it uses as much as digits as its factorization.

2081143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3544.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2081143 is about 1442.6167197146. The cubic root of 2081143 is about 127.6734637546.

Adding to 2081143 its reverse (3411802), we get a palindrome (5492945).

The spelling of 2081143 in words is "two million, eighty-one thousand, one hundred forty-three".