203140144 has 20 divisors (see below), whose sum is σ = 393811600. Its totient is φ = 101511360.

The previous prime is 203140129. The next prime is 203140177. The reversal of 203140144 is 441041302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42382 + ... + 46930.

It is an arithmetic number, because the mean of its divisors is an integer number (19690580).

Almost surely, 2^203140144 is an apocalyptic number.

It is an amenable number.

203140144 is a deficient number, since it is larger than the sum of its proper divisors (190671456).

203140144 is a wasteful number, since it uses less digits than its factorization.

203140144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348 (or 7342 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 203140144 is about 14252.7240905028. The cubic root of 203140144 is about 587.8482802287.

Adding to 203140144 its reverse (441041302), we get a palindrome (644181446).

The spelling of 203140144 in words is "two hundred three million, one hundred forty thousand, one hundred forty-four".