201343023240 has 128 divisors (see below), whose sum is σ = 613030032000. Its totient is φ = 52895766528.

The previous prime is 201343023157. The next prime is 201343023253. The reversal of 201343023240 is 42320343102.

201343023240 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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 201343023240.

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, 2924331 + ... + 2992389.

It is an arithmetic number, because the mean of its divisors is an integer number (4789297125).

Almost surely, 2^201343023240 is an apocalyptic number.

201343023240 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 201343023240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306515016000).

201343023240 is an abundant number, since it is smaller than the sum of its proper divisors (411687008760).

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

201343023240 is a wasteful number, since it uses less digits than its factorization.

201343023240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68439 (or 68435 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 201343023240 its reverse (42320343102), we get a palindrome (243663366342).

The spelling of 201343023240 in words is "two hundred one billion, three hundred forty-three million, twenty-three thousand, two hundred forty".