2002001331 has 32 divisors (see below), whose sum is σ = 3011788800. Its totient is φ = 1172414880.

The previous prime is 2002001299. The next prime is 2002001347. The reversal of 2002001331 is 1331002002.

It is a happy number.

It is not a de Polignac number, because 2002001331 - 2⁵ = 2002001299 is a prime.

It is a super-2 number, since 2×2002001331² = 8016018658651543122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2002001431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 114360 + ... + 130698.

It is an arithmetic number, because the mean of its divisors is an integer number (94118400).

Almost surely, 2^2002001331 is an apocalyptic number.

2002001331 is a deficient number, since it is larger than the sum of its proper divisors (1009787469).

2002001331 is a wasteful number, since it uses less digits than its factorization.

2002001331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16479.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 2002001331 is about 44743.7295159892. The cubic root of 2002001331 is about 1260.3411629709.

Adding to 2002001331 its reverse (1331002002), we get a palindrome (3333003333).

The spelling of 2002001331 in words is "two billion, two million, one thousand, three hundred thirty-one".