2321154500 has 144 divisors (see below), whose sum is σ = 6245065008. Its totient is φ = 748876800.

The previous prime is 2321154469. The next prime is 2321154509. The reversal of 2321154500 is 54511232.

It can be written as a sum of positive squares in 8 ways, for example, as 1069551616 + 1251602884 = 32704^2 + 35378^2 .

It is not an unprimeable number, because it can be changed into a prime (2321154509) 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, 413714 + ... + 419286.

It is an arithmetic number, because the mean of its divisors is an integer number (43368507).

Almost surely, 2^2321154500 is an apocalyptic number.

2321154500 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 2321154500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3122532504).

2321154500 is an abundant number, since it is smaller than the sum of its proper divisors (3923910508).

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

2321154500 is a wasteful number, since it uses less digits than its factorization.

2321154500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5604 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2321154500 is about 48178.3613253917. The cubic root of 2321154500 is about 1324.0407439323.

Adding to 2321154500 its reverse (54511232), we get a palindrome (2375665732).

The spelling of 2321154500 in words is "two billion, three hundred twenty-one million, one hundred fifty-four thousand, five hundred".