2123503500 has 192 divisors, whose sum is σ = 6360367104. Its totient is φ = 550368000.

The previous prime is 2123503483. The next prime is 2123503553. The reversal of 2123503500 is 53053212.

2123503500 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×2123503500³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 13525422 + ... + 13525578.

It is an arithmetic number, because the mean of its divisors is an integer number (33126912).

Almost surely, 2^2123503500 is an apocalyptic number.

2123503500 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 2123503500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3180183552).

2123503500 is an abundant number, since it is smaller than the sum of its proper divisors (4236863604).

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

2123503500 is a wasteful number, since it uses less digits than its factorization.

2123503500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 2123503500 is about 46081.4876061960. The cubic root of 2123503500 is about 1285.3389265813.

Adding to 2123503500 its reverse (53053212), we get a palindrome (2176556712).

The spelling of 2123503500 in words is "two billion, one hundred twenty-three million, five hundred three thousand, five hundred".