20143321000 has 64 divisors (see below), whose sum is σ = 51420432960. Its totient is φ = 7324840000.

The previous prime is 20143320983. The next prime is 20143321007. The reversal of 20143321000 is 12334102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20143321007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904606 + ... + 926605.

It is an arithmetic number, because the mean of its divisors is an integer number (803444265).

Almost surely, 2^20143321000 is an apocalyptic number.

20143321000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20143321000 is an abundant number, since it is smaller than the sum of its proper divisors (31277111960).

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

20143321000 is a wasteful number, since it uses less digits than its factorization.

20143321000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831243 (or 1831229 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20143321000 its reverse (12334102), we get a palindrome (20155655102).

It can be divided in two parts, 20143 and 321000, that added together give a palindrome (341143).

The spelling of 20143321000 in words is "twenty billion, one hundred forty-three million, three hundred twenty-one thousand".