2001023331023 has 8 divisors (see below), whose sum is σ = 2019008608848. Its totient is φ = 1983042914944.

The previous prime is 2001023331007. The next prime is 2001023331031. The reversal of 2001023331023 is 3201333201002.

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 2001023331023 - 2⁴ = 2001023331007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001023330986 and 2001023331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001023331053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386036 + ... + 2037417.

It is an arithmetic number, because the mean of its divisors is an integer number (252376076106).

Almost surely, 2^{2001023331023} is an apocalyptic number.

2001023331023 is a deficient number, since it is larger than the sum of its proper divisors (17985277825).

2001023331023 is a wasteful number, since it uses less digits than its factorization.

2001023331023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430873.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 2001023331023 its reverse (3201333201002), we get a palindrome (5202356532025).

The spelling of 2001023331023 in words is "two trillion, one billion, twenty-three million, three hundred thirty-one thousand, twenty-three".