21343130304 has 56 divisors (see below), whose sum is σ = 57243969840. Its totient is φ = 7016914944.

The previous prime is 21343130269. The next prime is 21343130309. The reversal of 21343130304 is 40303134312.

It is a super-2 number, since 2×21343130304² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21343130309) 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, 747369 + ... + 775400.

Almost surely, 2^21343130304 is an apocalyptic number.

21343130304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21343130304 is an abundant number, since it is smaller than the sum of its proper divisors (35900839536).

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

21343130304 is a wasteful number, since it uses less digits than its factorization.

21343130304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1522857 (or 1522847 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 21343130304 its reverse (40303134312), we get a palindrome (61646264616).

The spelling of 21343130304 in words is "twenty-one billion, three hundred forty-three million, one hundred thirty thousand, three hundred four".