21312300232330 has 8 divisors (see below), whose sum is σ = 38362140418212. Its totient is φ = 8524920092928.

The previous prime is 21312300232277. The next prime is 21312300232361. The reversal of 21312300232330 is 3323200321312.

It can be written as a sum of positive squares in 2 ways, for example, as 20206094824161 + 1106205408169 = 4495119^2 + 1051763^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21312300232295 and 21312300232304.

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 3 ways as a sum of consecutive naturals, for example, 1065615011607 + ... + 1065615011626.

Almost surely, 2^{21312300232330} is an apocalyptic number.

21312300232330 is a deficient number, since it is larger than the sum of its proper divisors (17049840185882).

21312300232330 is a wasteful number, since it uses less digits than its factorization.

21312300232330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131230023240.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 21312300232330 its reverse (3323200321312), we get a palindrome (24635500553642).

The spelling of 21312300232330 in words is "twenty-one trillion, three hundred twelve billion, three hundred million, two hundred thirty-two thousand, three hundred thirty".