2001023202131 has 4 divisors (see below), whose sum is σ = 2002025218752. Its totient is φ = 2000021185512.

The previous prime is 2001023202041. The next prime is 2001023202173. The reversal of 2001023202131 is 1312023201002.

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 2001023202131 - 2¹⁴ = 2001023185747 is a prime.

It is a super-2 number, since 2×2001023202131² (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 (2001023502131) 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 3 ways as a sum of consecutive naturals, for example, 501005315 + ... + 501009308.

It is an arithmetic number, because the mean of its divisors is an integer number (500506304688).

Almost surely, 2^{2001023202131} is an apocalyptic number.

2001023202131 is a deficient number, since it is larger than the sum of its proper divisors (1002016621).

2001023202131 is a wasteful number, since it uses less digits than its factorization.

2001023202131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002016620.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2001023202131 its reverse (1312023201002), we get a palindrome (3313046403133).

The spelling of 2001023202131 in words is "two trillion, one billion, twenty-three million, two hundred two thousand, one hundred thirty-one".