21343140203 has 8 divisors (see below), whose sum is σ = 26609629440. Its totient is φ = 16631018280.

The previous prime is 21343140163. The next prime is 21343140209. The reversal of 21343140203 is 30204134312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21343140203 - 2¹⁴ = 21343123819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21343140209) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 138591743 + ... + 138591896.

It is an arithmetic number, because the mean of its divisors is an integer number (3326203680).

Almost surely, 2^21343140203 is an apocalyptic number.

21343140203 is a deficient number, since it is larger than the sum of its proper divisors (5266489237).

21343140203 is a wasteful number, since it uses less digits than its factorization.

21343140203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277183657.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21343140203 its reverse (30204134312), we get a palindrome (51547274515).

The spelling of 21343140203 in words is "twenty-one billion, three hundred forty-three million, one hundred forty thousand, two hundred three".