203040320 has 168 divisors, whose sum is σ = 587922624. Its totient is φ = 66468864.

The previous prime is 203040317. The next prime is 203040347. The reversal of 203040320 is 23040302.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 203040295 and 203040304.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 360359 + ... + 360921.

Almost surely, 2^203040320 is an apocalyptic number.

203040320 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 203040320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293961312).

203040320 is an abundant number, since it is smaller than the sum of its proper divisors (384882304).

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

203040320 is a wasteful number, since it uses less digits than its factorization.

203040320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 203040320 is about 14249.2217331334. The cubic root of 203040320 is about 587.7519740034.

Adding to 203040320 its reverse (23040302), we get a palindrome (226080622).

The spelling of 203040320 in words is "two hundred three million, forty thousand, three hundred twenty".