21344304341 has 4 divisors (see below), whose sum is σ = 22467688800. Its totient is φ = 20220919884.

The previous prime is 21344304329. The next prime is 21344304383. The reversal of 21344304341 is 14340344312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21344304341 - 2²² = 21340110037 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 (21344304391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561692201 + ... + 561692238.

It is an arithmetic number, because the mean of its divisors is an integer number (5616922200).

Almost surely, 2^21344304341 is an apocalyptic number.

It is an amenable number.

21344304341 is a deficient number, since it is larger than the sum of its proper divisors (1123384459).

21344304341 is a wasteful number, since it uses less digits than its factorization.

21344304341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123384458.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 21344304341 its reverse (14340344312), we get a palindrome (35684648653).

The spelling of 21344304341 in words is "twenty-one billion, three hundred forty-four million, three hundred four thousand, three hundred forty-one".