20430343012 has 12 divisors (see below), whose sum is σ = 35755342336. Its totient is φ = 10214530920.

The previous prime is 20430342991. The next prime is 20430343057. The reversal of 20430343012 is 21034303402.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 84408 + ... + 219055.

Almost surely, 2^20430343012 is an apocalyptic number.

It is an amenable number.

20430343012 is a deficient number, since it is larger than the sum of its proper divisors (15324999324).

20430343012 is a wasteful number, since it uses less digits than its factorization.

20430343012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320298 (or 320296 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20430343012 its reverse (21034303402), we get a palindrome (41464646414).

The spelling of 20430343012 in words is "twenty billion, four hundred thirty million, three hundred forty-three thousand, twelve".