20431333000 has 128 divisors (see below), whose sum is σ = 51590448000. Its totient is φ = 7528723200.

The previous prime is 20431332953. The next prime is 20431333007. The reversal of 20431333000 is 33313402.

It is not an unprimeable number, because it can be changed into a prime (20431333007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8045731 + ... + 8048269.

It is an arithmetic number, because the mean of its divisors is an integer number (403050375).

Almost surely, 2^20431333000 is an apocalyptic number.

20431333000 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 20431333000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25795224000).

20431333000 is an abundant number, since it is smaller than the sum of its proper divisors (31159115000).

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

20431333000 is a wasteful number, since it uses less digits than its factorization.

20431333000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20431333000 its reverse (33313402), we get a palindrome (20464646402).

The spelling of 20431333000 in words is "twenty billion, four hundred thirty-one million, three hundred thirty-three thousand".