2001031042231 has 16 divisors (see below), whose sum is σ = 2160188100000. Its totient is φ = 1842626193408.

The previous prime is 2001031042217. The next prime is 2001031042247. The reversal of 2001031042231 is 1322401301002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2001031042231 is a prime.

It is a super-2 number, since 2×2001031042231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2001031042199 and 2001031042208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001031042211) 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, 9918360 + ... + 10118098.

It is an arithmetic number, because the mean of its divisors is an integer number (135011756250).

Almost surely, 2^{2001031042231} is an apocalyptic number.

2001031042231 is a deficient number, since it is larger than the sum of its proper divisors (159157057769).

2001031042231 is a wasteful number, since it uses less digits than its factorization.

2001031042231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201618.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2001031042231 its reverse (1322401301002), we get a palindrome (3323432343233).

The spelling of 2001031042231 in words is "two trillion, one billion, thirty-one million, forty-two thousand, two hundred thirty-one".