203442243220 has 24 divisors (see below), whose sum is σ = 428078093184. Its totient is φ = 81215110176.

The previous prime is 203442243157. The next prime is 203442243233. The reversal of 203442243220 is 22342244302.

It is a happy number.

203442243220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10101384 + ... + 10121503.

It is an arithmetic number, because the mean of its divisors is an integer number (17836587216).

Almost surely, 2^203442243220 is an apocalyptic number.

203442243220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203442243220 is an abundant number, since it is smaller than the sum of its proper divisors (224635849964).

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

203442243220 is a wasteful number, since it uses less digits than its factorization.

203442243220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20223399 (or 20223397 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 203442243220 its reverse (22342244302), we get a palindrome (225784487522).

The spelling of 203442243220 in words is "two hundred three billion, four hundred forty-two million, two hundred forty-three thousand, two hundred twenty".