203240255 has 4 divisors (see below), whose sum is σ = 243888312. Its totient is φ = 162592200.

The previous prime is 203240251. The next prime is 203240263. The reversal of 203240255 is 552042302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203240255 - 2² = 203240251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203240255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203240251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20324021 + ... + 20324030.

It is an arithmetic number, because the mean of its divisors is an integer number (60972078).

Almost surely, 2^203240255 is an apocalyptic number.

203240255 is a deficient number, since it is larger than the sum of its proper divisors (40648057).

203240255 is an equidigital number, since it uses as much as digits as its factorization.

203240255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40648056.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 203240255 is about 14256.2356532151. The cubic root of 203240255 is about 587.9448316590.

Adding to 203240255 its reverse (552042302), we get a palindrome (755282557).

The spelling of 203240255 in words is "two hundred three million, two hundred forty thousand, two hundred fifty-five".