21304232708 has 24 divisors (see below), whose sum is σ = 40708222464. Its totient is φ = 9675050400.

The previous prime is 21304232707. The next prime is 21304232717. The reversal of 21304232708 is 80723240312.

It is not an unprimeable number, because it can be changed into a prime (21304232707) 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, 167588 + ... + 265883.

It is an arithmetic number, because the mean of its divisors is an integer number (1696175936).

Almost surely, 2^21304232708 is an apocalyptic number.

It is an amenable number.

21304232708 is a deficient number, since it is larger than the sum of its proper divisors (19403989756).

21304232708 is a wasteful number, since it uses less digits than its factorization.

21304232708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434603 (or 434601 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The spelling of 21304232708 in words is "twenty-one billion, three hundred four million, two hundred thirty-two thousand, seven hundred eight".