2123032340 has 96 divisors (see below), whose sum is σ = 5250341376. Its totient is φ = 710922240.

The previous prime is 2123032339. The next prime is 2123032381. The reversal of 2123032340 is 432303212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1924229 + ... + 1925331.

It is an arithmetic number, because the mean of its divisors is an integer number (54691056).

Almost surely, 2^2123032340 is an apocalyptic number.

2123032340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123032340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2625170688).

2123032340 is an abundant number, since it is smaller than the sum of its proper divisors (3127309036).

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

2123032340 is a wasteful number, since it uses less digits than its factorization.

2123032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1809 (or 1807 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 2123032340 is about 46076.3750744348. The cubic root of 2123032340 is about 1285.2438564791.

Adding to 2123032340 its reverse (432303212), we get a palindrome (2555335552).

The spelling of 2123032340 in words is "two billion, one hundred twenty-three million, thirty-two thousand, three hundred forty".