203230442320 has 160 divisors (see below), whose sum is σ = 491145707520. Its totient is φ = 78125160960.

The previous prime is 203230442299. The next prime is 203230442321. The reversal of 203230442320 is 23244032302.

It is a super-2 number, since 2×203230442320² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203230442321) 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, 435182727 + ... + 435183193.

It is an arithmetic number, because the mean of its divisors is an integer number (3069660672).

Almost surely, 2^203230442320 is an apocalyptic number.

203230442320 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 203230442320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245572853760).

203230442320 is an abundant number, since it is smaller than the sum of its proper divisors (287915265200).

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

203230442320 is a wasteful number, since it uses less digits than its factorization.

203230442320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1347 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 25.

Adding to 203230442320 its reverse (23244032302), we get a palindrome (226474474622).

The spelling of 203230442320 in words is "two hundred three billion, two hundred thirty million, four hundred forty-two thousand, three hundred twenty".