203043040 has 48 divisors (see below), whose sum is σ = 480568032. Its totient is φ = 81068544.

The previous prime is 203043037. The next prime is 203043041. The reversal of 203043040 is 40340302.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203043041) 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, 139597 + ... + 141043.

It is an arithmetic number, because the mean of its divisors is an integer number (10011834).

Almost surely, 2^203043040 is an apocalyptic number.

203043040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203043040 is an abundant number, since it is smaller than the sum of its proper divisors (277524992).

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

203043040 is a wasteful number, since it uses less digits than its factorization.

203043040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2339 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 203043040 is about 14249.3171766229. The cubic root of 203043040 is about 587.7545985695.

Adding to 203043040 its reverse (40340302), we get a palindrome (243383342).

The spelling of 203043040 in words is "two hundred three million, forty-three thousand, forty".