20430431340000 has 1440 divisors, whose sum is σ = 79654602867840. Its totient is φ = 4564200960000.

The previous prime is 20430431339993. The next prime is 20430431340013. The reversal of 20430431340000 is 4313403402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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 239 ways as a sum of consecutive naturals, for example, 5103777999 + ... + 5103782001.

It is an arithmetic number, because the mean of its divisors is an integer number (55315696436).

Almost surely, 2^{20430431340000} is an apocalyptic number.

20430431340000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20430431340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39827301433920).

20430431340000 is an abundant number, since it is smaller than the sum of its proper divisors (59224171527840).

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

20430431340000 is a wasteful number, since it uses less digits than its factorization.

20430431340000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4114 (or 4080 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20430431340000 its reverse (4313403402), we get a palindrome (20434744743402).

The spelling of 20430431340000 in words is "twenty trillion, four hundred thirty billion, four hundred thirty-one million, three hundred forty thousand".