2001320310 has 128 divisors (see below), whose sum is σ = 5351132160. Its totient is φ = 474969600.

The previous prime is 2001320261. The next prime is 2001320311. The reversal of 2001320310 is 130231002.

It is a happy number.

It is a super-2 number, since 2×2001320310² = 8010565966436992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001320311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5365284 + ... + 5365656.

It is an arithmetic number, because the mean of its divisors is an integer number (41805720).

Almost surely, 2^2001320310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2001320310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2675566080).

2001320310 is an abundant number, since it is smaller than the sum of its proper divisors (3349811850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001320310 is a wasteful number, since it uses less digits than its factorization.

2001320310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

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

The square root of 2001320310 is about 44736.1186291346. The cubic root of 2001320310 is about 1260.1982366353.

Adding to 2001320310 its reverse (130231002), we get a palindrome (2131551312).

The spelling of 2001320310 in words is "two billion, one million, three hundred twenty thousand, three hundred ten".