21304234330 has 32 divisors (see below), whose sum is σ = 40592534400. Its totient is φ = 8036492352.

The previous prime is 21304234283. The next prime is 21304234363. The reversal of 21304234330 is 3343240312.

It is a junction number, because it is equal to n+sod(n) for n = 21304234295 and 21304234304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841750 + ... + 866689.

It is an arithmetic number, because the mean of its divisors is an integer number (1268516700).

Almost surely, 2^21304234330 is an apocalyptic number.

21304234330 is a deficient number, since it is larger than the sum of its proper divisors (19288300070).

21304234330 is a wasteful number, since it uses less digits than its factorization.

21304234330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1708518.

The product of its (nonzero) digits is 5184, while the sum is 25.

Adding to 21304234330 its reverse (3343240312), we get a palindrome (24647474642).

The spelling of 21304234330 in words is "twenty-one billion, three hundred four million, two hundred thirty-four thousand, three hundred thirty".