2001331223 has 4 divisors (see below), whose sum is σ = 2088345648. Its totient is φ = 1914316800.

The previous prime is 2001331207. The next prime is 2001331231. The reversal of 2001331223 is 3221331002.

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 2001331223 - 2⁴ = 2001331207 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 (2001331723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43507178 + ... + 43507223.

It is an arithmetic number, because the mean of its divisors is an integer number (522086412).

Almost surely, 2^2001331223 is an apocalyptic number.

2001331223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2001331223 is a deficient number, since it is larger than the sum of its proper divisors (87014425).

2001331223 is an equidigital number, since it uses as much as digits as its factorization.

2001331223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87014424.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2001331223 is about 44736.2405997643. The cubic root of 2001331223 is about 1260.2005272096.

Adding to 2001331223 its reverse (3221331002), we get a palindrome (5222662225).

The spelling of 2001331223 in words is "two billion, one million, three hundred thirty-one thousand, two hundred twenty-three".