2000001331 has 4 divisors (see below), whose sum is σ = 2000103912. Its totient is φ = 1999898752.

The previous prime is 2000001287. The next prime is 2000001349. The reversal of 2000001331 is 1331000002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2000001331 - 2¹⁹ = 1999477043 is a prime.

It is a super-2 number, since 2×2000001331² = 8000010648003543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000002331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12025 + ... + 64378.

It is an arithmetic number, because the mean of its divisors is an integer number (500025978).

Almost surely, 2^2000001331 is an apocalyptic number.

2000001331 is a deficient number, since it is larger than the sum of its proper divisors (102581).

2000001331 is an equidigital number, since it uses as much as digits as its factorization.

2000001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102580.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 2000001331 is about 44721.3744310257. The cubic root of 2000001331 is about 1259.9213293873.

Adding to 2000001331 its reverse (1331000002), we get a palindrome (3331001333).

The spelling of 2000001331 in words is "two billion, one thousand, three hundred thirty-one".