2102001331 has 4 divisors (see below), whose sum is σ = 2212633000. Its totient is φ = 1991369664.

The previous prime is 2102001313. The next prime is 2102001353. The reversal of 2102001331 is 1331002012.

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 2102001331 - 2⁵ = 2102001299 is a prime.

It is a super-2 number, since 2×2102001331² = 8836819191051543122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2102001731) 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, 55315806 + ... + 55315843.

It is an arithmetic number, because the mean of its divisors is an integer number (553158250).

Almost surely, 2^2102001331 is an apocalyptic number.

2102001331 is a deficient number, since it is larger than the sum of its proper divisors (110631669).

2102001331 is a wasteful number, since it uses less digits than its factorization.

2102001331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110631668.

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

The square root of 2102001331 is about 45847.5880608784. The cubic root of 2102001331 is about 1280.9858394419.

Adding to 2102001331 its reverse (1331002012), we get a palindrome (3433003343).

The spelling of 2102001331 in words is "two billion, one hundred two million, one thousand, three hundred thirty-one".