212304320140 has 96 divisors (see below), whose sum is σ = 515139222528. Its totient is φ = 72637824000.

The previous prime is 212304320131. The next prime is 212304320177. The reversal of 212304320140 is 41023403212.

212304320140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15966895 + ... + 15980185.

It is an arithmetic number, because the mean of its divisors is an integer number (5366033568).

Almost surely, 2^212304320140 is an apocalyptic number.

212304320140 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 212304320140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257569611264).

212304320140 is an abundant number, since it is smaller than the sum of its proper divisors (302834902388).

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

212304320140 is a wasteful number, since it uses less digits than its factorization.

212304320140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17599 (or 17597 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 212304320140 its reverse (41023403212), we get a palindrome (253327723352).

The spelling of 212304320140 in words is "two hundred twelve billion, three hundred four million, three hundred twenty thousand, one hundred forty".