3581143 has 4 divisors (see below), whose sum is σ = 3618160. Its totient is φ = 3544128.

The previous prime is 3581131. The next prime is 3581153. The reversal of 3581143 is 3411853.

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 3581143 - 2²¹ = 1483991 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 (3581113) 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 3 ways as a sum of consecutive naturals, for example, 18363 + ... + 18556.

It is an arithmetic number, because the mean of its divisors is an integer number (904540).

Almost surely, 2^3581143 is an apocalyptic number.

3581143 is a deficient number, since it is larger than the sum of its proper divisors (37017).

3581143 is an equidigital number, since it uses as much as digits as its factorization.

3581143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37016.

The product of its digits is 1440, while the sum is 25.

The square root of 3581143 is about 1892.3908158729. The cubic root of 3581143 is about 152.9938197911.

Adding to 3581143 its reverse (3411853), we get a palindrome (6992996).

The spelling of 3581143 in words is "three million, five hundred eighty-one thousand, one hundred forty-three".