21442431300 has 72 divisors (see below), whose sum is σ = 62654448192. Its totient is φ = 5661360000.

The previous prime is 21442431293. The next prime is 21442431319. The reversal of 21442431300 is 313424412.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 323536 + ... + 384135.

Almost surely, 2^21442431300 is an apocalyptic number.

21442431300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21442431300 is an abundant number, since it is smaller than the sum of its proper divisors (41212016892).

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

21442431300 is a wasteful number, since it uses less digits than its factorization.

21442431300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707789 (or 707782 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21442431300 its reverse (313424412), we get a palindrome (21755855712).

The spelling of 21442431300 in words is "twenty-one billion, four hundred forty-two million, four hundred thirty-one thousand, three hundred".