20343312000 has 640 divisors, whose sum is σ = 82482079680. Its totient is φ = 4928256000.

The previous prime is 20343311999. The next prime is 20343312019. The reversal of 20343312000 is 21334302.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 14255287 + ... + 14256713.

Almost surely, 2^20343312000 is an apocalyptic number.

20343312000 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 20343312000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41241039840).

20343312000 is an abundant number, since it is smaller than the sum of its proper divisors (62138767680).

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

20343312000 is a wasteful number, since it uses less digits than its factorization.

20343312000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20343312000 its reverse (21334302), we get a palindrome (20364646302).

The spelling of 20343312000 in words is "twenty billion, three hundred forty-three million, three hundred twelve thousand".