2001231033331 has 8 divisors (see below), whose sum is σ = 2002770215424. Its totient is φ = 1999692076800.

The previous prime is 2001231033317. The next prime is 2001231033349. The reversal of 2001231033331 is 1333301321002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001231033331 - 2¹⁷ = 2001230902259 is a prime.

It is a super-2 number, since 2×2001231033331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001231033311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20550606 + ... + 20647756.

It is an arithmetic number, because the mean of its divisors is an integer number (250346276928).

Almost surely, 2^{2001231033331} is an apocalyptic number.

2001231033331 is a deficient number, since it is larger than the sum of its proper divisors (1539182093).

2001231033331 is a wasteful number, since it uses less digits than its factorization.

2001231033331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112781.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 2001231033331 its reverse (1333301321002), we get a palindrome (3334532354333).

The spelling of 2001231033331 in words is "two trillion, one billion, two hundred thirty-one million, thirty-three thousand, three hundred thirty-one".