20431130200 has 48 divisors (see below), whose sum is σ = 51156413280. Its totient is φ = 7543800960.

The previous prime is 20431130197. The next prime is 20431130201. The reversal of 20431130200 is 203113402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20431130201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3926464 + ... + 3931663.

It is an arithmetic number, because the mean of its divisors is an integer number (1065758610).

Almost surely, 2^20431130200 is an apocalyptic number.

20431130200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20431130200 is an abundant number, since it is smaller than the sum of its proper divisors (30725283080).

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

20431130200 is a wasteful number, since it uses less digits than its factorization.

20431130200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858156 (or 7858147 counting only the distinct ones).

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

Adding to 20431130200 its reverse (203113402), we get a palindrome (20634243602).

The spelling of 20431130200 in words is "twenty billion, four hundred thirty-one million, one hundred thirty thousand, two hundred".