21340443230103 has 8 divisors (see below), whose sum is σ = 29951499270400. Its totient is φ = 13478174671608.

The previous prime is 21340443230081. The next prime is 21340443230149. The reversal of 21340443230103 is 30103234404312.

It is a happy number.

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

It is not a de Polignac number, because 21340443230103 - 2²⁵ = 21340409675671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21340443230303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187196870383 + ... + 187196870496.

It is an arithmetic number, because the mean of its divisors is an integer number (3743937408800).

Almost surely, 2^{21340443230103} is an apocalyptic number.

21340443230103 is a deficient number, since it is larger than the sum of its proper divisors (8611056040297).

21340443230103 is a wasteful number, since it uses less digits than its factorization.

21340443230103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374393740901.

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 21340443230103 its reverse (30103234404312), we get a palindrome (51443677634415).

The spelling of 21340443230103 in words is "twenty-one trillion, three hundred forty billion, four hundred forty-three million, two hundred thirty thousand, one hundred three".