203240144 has 20 divisors (see below), whose sum is σ = 410899296. Its totient is φ = 97201632.

The previous prime is 203240087. The next prime is 203240153. The reversal of 203240144 is 441042302.

It is a super-2 number, since 2×203240144² = 82613112266281472, which contains 22 as substring.

It is a congruent number.

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, 275774 + ... + 276509.

Almost surely, 2^203240144 is an apocalyptic number.

It is an amenable number.

203240144 is an abundant number, since it is smaller than the sum of its proper divisors (207659152).

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

203240144 is a wasteful number, since it uses less digits than its factorization.

203240144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552314 (or 552308 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 203240144 is about 14256.2317601812. The cubic root of 203240144 is about 587.9447246233.

Adding to 203240144 its reverse (441042302), we get a palindrome (644282446).

The spelling of 203240144 in words is "two hundred three million, two hundred forty thousand, one hundred forty-four".