2321213400 has 288 divisors, whose sum is σ = 8652571200. Its totient is φ = 552902400.

The previous prime is 2321213357. The next prime is 2321213407. The reversal of 2321213400 is 43121232.

2321213400 is a `hidden beast` number, since 2 + 321 + 2 + 1 + 340 + 0 = 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 (2321213407) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 1167207 + ... + 1169193.

It is an arithmetic number, because the mean of its divisors is an integer number (30043650).

Almost surely, 2^2321213400 is an apocalyptic number.

2321213400 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 2321213400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4326285600).

2321213400 is an abundant number, since it is smaller than the sum of its proper divisors (6331357800).

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

2321213400 is a wasteful number, since it uses less digits than its factorization.

2321213400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2079 (or 2067 counting only the distinct ones).

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

The square root of 2321213400 is about 48178.9725917853. The cubic root of 2321213400 is about 1324.0519431494.

Adding to 2321213400 its reverse (43121232), we get a palindrome (2364334632).

The spelling of 2321213400 in words is "two billion, three hundred twenty-one million, two hundred thirteen thousand, four hundred".