2001320131 has 6 divisors (see below), whose sum is σ = 2072711732. Its totient is φ = 1932308280.

The previous prime is 2001320119. The next prime is 2001320149. The reversal of 2001320131 is 1310231002.

It is not a de Polignac number, because 2001320131 - 2⁵ = 2001320099 is a prime.

It is a super-2 number, since 2×2001320131² = 8010564533491714322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001320231) 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 5 ways as a sum of consecutive naturals, for example, 1189005 + ... + 1190686.

Almost surely, 2^2001320131 is an apocalyptic number.

2001320131 is a deficient number, since it is larger than the sum of its proper divisors (71391601).

2001320131 is an equidigital number, since it uses as much as digits as its factorization.

2001320131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2379749 (or 2379720 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2001320131 is about 44736.1166285139. The cubic root of 2001320131 is about 1260.1981990642.

Adding to 2001320131 its reverse (1310231002), we get a palindrome (3311551133).

The spelling of 2001320131 in words is "two billion, one million, three hundred twenty thousand, one hundred thirty-one".