21304411343 has 8 divisors (see below), whose sum is σ = 21432629568. Its totient is φ = 21176377344.

The previous prime is 21304411283. The next prime is 21304411391. The reversal of 21304411343 is 34311440312.

It is a happy number.

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 21304411343 - 2⁸ = 21304411087 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 (21304410343) 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, 189530 + ... + 280232.

It is an arithmetic number, because the mean of its divisors is an integer number (2679078696).

Almost surely, 2^21304411343 is an apocalyptic number.

21304411343 is a deficient number, since it is larger than the sum of its proper divisors (128218225).

21304411343 is a wasteful number, since it uses less digits than its factorization.

21304411343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92113.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21304411343 its reverse (34311440312), we get a palindrome (55615851655).

The spelling of 21304411343 in words is "twenty-one billion, three hundred four million, four hundred eleven thousand, three hundred forty-three".