265243103 has 4 divisors (see below), whose sum is σ = 265733928. Its totient is φ = 264752280.

The previous prime is 265243087. The next prime is 265243109. The reversal of 265243103 is 301342562.

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

It is a cyclic number.

It is not a de Polignac number, because 265243103 - 2⁴ = 265243087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265243109) 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, 244601 + ... + 245682.

It is an arithmetic number, because the mean of its divisors is an integer number (66433482).

Almost surely, 2^265243103 is an apocalyptic number.

265243103 is a deficient number, since it is larger than the sum of its proper divisors (490825).

265243103 is an equidigital number, since it uses as much as digits as its factorization.

265243103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490824.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 265243103 is about 16286.2857337086. The cubic root of 265243103 is about 642.5121825424.

Adding to 265243103 its reverse (301342562), we get a palindrome (566585665).

The spelling of 265243103 in words is "two hundred sixty-five million, two hundred forty-three thousand, one hundred three".