20340203412 has 24 divisors (see below), whose sum is σ = 47751647776. Its totient is φ = 6738471648.

The previous prime is 20340203407. The next prime is 20340203431. The reversal of 20340203412 is 21430204302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5197483 + ... + 5201394.

Almost surely, 2^20340203412 is an apocalyptic number.

It is an amenable number.

20340203412 is an abundant number, since it is smaller than the sum of its proper divisors (27411444364).

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

20340203412 is a wasteful number, since it uses less digits than its factorization.

20340203412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10399047 (or 10399045 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20340203412 its reverse (21430204302), we get a palindrome (41770407714).

The spelling of 20340203412 in words is "twenty billion, three hundred forty million, two hundred three thousand, four hundred twelve".