203431340000 has 720 divisors, whose sum is σ = 613460642256. Its totient is φ = 66124800000.

The previous prime is 203431339981. The next prime is 203431340003. The reversal of 203431340000 is 43134302.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203431340003) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2450979959 + ... + 2450980041.

Almost surely, 2^203431340000 is an apocalyptic number.

203431340000 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 203431340000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306730321128).

203431340000 is an abundant number, since it is smaller than the sum of its proper divisors (410029302256).

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

203431340000 is an equidigital number, since it uses as much as digits as its factorization.

203431340000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 203431340000 its reverse (43134302), we get a palindrome (203474474302).

The spelling of 203431340000 in words is "two hundred three billion, four hundred thirty-one million, three hundred forty thousand".