203243045 has 4 divisors (see below), whose sum is σ = 243891660. Its totient is φ = 162594432.

The previous prime is 203243039. The next prime is 203243071. The reversal of 203243045 is 540342302.

203243045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 156975841 + 46267204 = 12529^2 + 6802^2 .

It is a cyclic number.

It is not a de Polignac number, because 203243045 - 2¹² = 203238949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203243045.

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, 20324300 + ... + 20324309.

It is an arithmetic number, because the mean of its divisors is an integer number (60972915).

Almost surely, 2^203243045 is an apocalyptic number.

It is an amenable number.

203243045 is a deficient number, since it is larger than the sum of its proper divisors (40648615).

203243045 is an equidigital number, since it uses as much as digits as its factorization.

203243045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40648614.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 203243045 is about 14256.3335047971. Note that the first 3 decimals coincide. The cubic root of 203243045 is about 587.9475220030.

Adding to 203243045 its reverse (540342302), we get a palindrome (743585347).

The spelling of 203243045 in words is "two hundred three million, two hundred forty-three thousand, forty-five".