203221040 has 40 divisors (see below), whose sum is σ = 515444688. Its totient is φ = 73898240.

The previous prime is 203221037. The next prime is 203221049. The reversal of 203221040 is 40122302.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (203221049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114587 + ... + 116346.

Almost surely, 2^203221040 is an apocalyptic number.

203221040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203221040 is an abundant number, since it is smaller than the sum of its proper divisors (312223648).

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

203221040 is a wasteful number, since it uses less digits than its factorization.

203221040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230957 (or 230951 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 203221040 is about 14255.5617216580. The cubic root of 203221040 is about 587.9263023311.

Adding to 203221040 its reverse (40122302), we get a palindrome (243343342).

The spelling of 203221040 in words is "two hundred three million, two hundred twenty-one thousand, forty".