20212031231430 has 64 divisors (see below), whose sum is σ = 49662107182080. Its totient is φ = 5262298861824.

The previous prime is 20212031231429. The next prime is 20212031231443. The reversal of 20212031231430 is 3413213021202.

It is a super-3 number, since 3×20212031231430³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20212031231430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16947484 + ... + 18100863.

It is an arithmetic number, because the mean of its divisors is an integer number (775970424720).

Almost surely, 2^{20212031231430} is an apocalyptic number.

20212031231430 is an abundant number, since it is smaller than the sum of its proper divisors (29450075950650).

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

20212031231430 is a wasteful number, since it uses less digits than its factorization.

20212031231430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35048813.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 20212031231430 its reverse (3413213021202), we get a palindrome (23625244252632).

The spelling of 20212031231430 in words is "twenty trillion, two hundred twelve billion, thirty-one million, two hundred thirty-one thousand, four hundred thirty".