203230303120 has 80 divisors (see below), whose sum is σ = 509858460720. Its totient is φ = 74891261952.

The previous prime is 203230303091. The next prime is 203230303207. The reversal of 203230303120 is 21303032302.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 36256729744 + 166973573376 = 190412^2 + 408624^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×203230303120² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337402 + ... + 721318.

It is an arithmetic number, because the mean of its divisors is an integer number (6373230759).

Almost surely, 2^203230303120 is an apocalyptic number.

203230303120 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 203230303120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254929230360).

203230303120 is an abundant number, since it is smaller than the sum of its proper divisors (306628157600).

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

203230303120 is a wasteful number, since it uses less digits than its factorization.

203230303120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384452 (or 384446 counting only the distinct ones).

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

Adding to 203230303120 its reverse (21303032302), we get a palindrome (224533335422).

The spelling of 203230303120 in words is "two hundred three billion, two hundred thirty million, three hundred three thousand, one hundred twenty".