21343041304 has 32 divisors (see below), whose sum is σ = 43104957840. Its totient is φ = 9848707200.

The previous prime is 21343041301. The next prime is 21343041311. The reversal of 21343041304 is 40314034312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21343041301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608074 + ... + 642214.

Almost surely, 2^21343041304 is an apocalyptic number.

It is an amenable number.

21343041304 is an abundant number, since it is smaller than the sum of its proper divisors (21761916536).

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

21343041304 is a wasteful number, since it uses less digits than its factorization.

21343041304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40171 (or 40167 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21343041304 its reverse (40314034312), we get a palindrome (61657075616).

The spelling of 21343041304 in words is "twenty-one billion, three hundred forty-three million, forty-one thousand, three hundred four".