2323121400 has 432 divisors, whose sum is σ = 8643866400. Its totient is φ = 557107200.

The previous prime is 2323121341. The next prime is 2323121407. The reversal of 2323121400 is 41213232.

2323121400 is a `hidden beast` number, since 232 + 31 + 2 + 1 + 400 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2323121407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 29406561 + ... + 29406639.

It is an arithmetic number, because the mean of its divisors is an integer number (20008950).

Almost surely, 2^2323121400 is an apocalyptic number.

2323121400 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 2323121400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4321933200).

2323121400 is an abundant number, since it is smaller than the sum of its proper divisors (6320745000).

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

2323121400 is a wasteful number, since it uses less digits than its factorization.

2323121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2323121400 is about 48198.7696938418. The cubic root of 2323121400 is about 1324.4146269126.

Adding to 2323121400 its reverse (41213232), we get a palindrome (2364334632).

The spelling of 2323121400 in words is "two billion, three hundred twenty-three million, one hundred twenty-one thousand, four hundred".