21004323230 has 64 divisors (see below), whose sum is σ = 41578100928. Its totient is φ = 7576488960.

The previous prime is 21004323227. The next prime is 21004323253. The reversal of 21004323230 is 3232340012.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 7508192 + ... + 7510988.

It is an arithmetic number, because the mean of its divisors is an integer number (649657827).

Almost surely, 2^21004323230 is an apocalyptic number.

21004323230 is a deficient number, since it is larger than the sum of its proper divisors (20573777698).

21004323230 is a wasteful number, since it uses less digits than its factorization.

21004323230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3341.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21004323230 its reverse (3232340012), we get a palindrome (24236663242).

The spelling of 21004323230 in words is "twenty-one billion, four million, three hundred twenty-three thousand, two hundred thirty".