2331021330 has 96 divisors (see below), whose sum is σ = 6622611840. Its totient is φ = 564157440.

The previous prime is 2331021323. The next prime is 2331021331. The reversal of 2331021330 is 331201332.

2331021330 is a `hidden beast` number, since 2 + 3 + 310 + 21 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2331021331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 733986 + ... + 737154.

It is an arithmetic number, because the mean of its divisors is an integer number (68985540).

Almost surely, 2^2331021330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2331021330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3311305920).

2331021330 is an abundant number, since it is smaller than the sum of its proper divisors (4291590510).

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

2331021330 is a wasteful number, since it uses less digits than its factorization.

2331021330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3933 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2331021330 is about 48280.6517147397. The cubic root of 2331021330 is about 1325.9141819797.

Adding to 2331021330 its reverse (331201332), we get a palindrome (2662222662).

It can be divided in two parts, 233102 and 1330, that added together give a palindrome (234432).

The spelling of 2331021330 in words is "two billion, three hundred thirty-one million, twenty-one thousand, three hundred thirty".