2001443241 has 16 divisors (see below), whose sum is σ = 3070020608. Its totient is φ = 1136106000.

The previous prime is 2001443237. The next prime is 2001443321. The reversal of 2001443241 is 1423441002.

It is not a de Polignac number, because 2001443241 - 2² = 2001443237 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001441241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312415 + ... + 318756.

It is an arithmetic number, because the mean of its divisors is an integer number (191876288).

Almost surely, 2^2001443241 is an apocalyptic number.

2001443241 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2001443241 is a deficient number, since it is larger than the sum of its proper divisors (1068577367).

2001443241 is a wasteful number, since it uses less digits than its factorization.

2001443241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631332.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2001443241 is about 44737.4925649617. The cubic root of 2001443241 is about 1260.2240386449.

Adding to 2001443241 its reverse (1423441002), we get a palindrome (3424884243).

It can be divided in two parts, 200 and 1443241, that added together give a palindrome (1443441).

The spelling of 2001443241 in words is "two billion, one million, four hundred forty-three thousand, two hundred forty-one".