2123331840 has 576 divisors, whose sum is σ = 8806533120. Its totient is φ = 474439680.

The previous prime is 2123331823. The next prime is 2123331851. The reversal of 2123331840 is 481333212.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16208575 + ... + 16208705.

It is an arithmetic number, because the mean of its divisors is an integer number (15289120).

Almost surely, 2^2123331840 is an apocalyptic number.

2123331840 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 2123331840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4403266560).

2123331840 is an abundant number, since it is smaller than the sum of its proper divisors (6683201280).

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

2123331840 is a wasteful number, since it uses less digits than its factorization.

2123331840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 2123331840 is about 46079.6249984741. The cubic root of 2123331840 is about 1285.3042908600.

The spelling of 2123331840 in words is "two billion, one hundred twenty-three million, three hundred thirty-one thousand, eight hundred forty".