203534244040 has 32 divisors (see below), whose sum is σ = 457970834880. Its totient is φ = 81410357952.

The previous prime is 203534243959. The next prime is 203534244049. The reversal of 203534244040 is 40442435302.

It is a junction number, because it is equal to n+sod(n) for n = 203534243993 and 203534244011.

It is not an unprimeable number, because it can be changed into a prime (203534244049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037047 + ... + 1217593.

It is an arithmetic number, because the mean of its divisors is an integer number (14311588590).

Almost surely, 2^203534244040 is an apocalyptic number.

203534244040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203534244040 is an abundant number, since it is smaller than the sum of its proper divisors (254436590840).

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

203534244040 is a wasteful number, since it uses less digits than its factorization.

203534244040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208741 (or 208737 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 31.

Adding to 203534244040 its reverse (40442435302), we get a palindrome (243976679342).

The spelling of 203534244040 in words is "two hundred three billion, five hundred thirty-four million, two hundred forty-four thousand, forty".