243103145 has 32 divisors (see below), whose sum is σ = 320785920. Its totient is φ = 176117760.

The previous prime is 243103139. The next prime is 243103177. The reversal of 243103145 is 541301342.

It is not a de Polignac number, because 243103145 - 2¹⁴ = 243086761 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 243103145.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 274874 + ... + 275756.

It is an arithmetic number, because the mean of its divisors is an integer number (10024560).

Almost surely, 2^243103145 is an apocalyptic number.

It is an amenable number.

243103145 is a deficient number, since it is larger than the sum of its proper divisors (77682775).

243103145 is a wasteful number, since it uses less digits than its factorization.

243103145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 243103145 is about 15591.7652945393. The cubic root of 243103145 is about 624.1134267085.

Adding to 243103145 its reverse (541301342), we get a palindrome (784404487).

The spelling of 243103145 in words is "two hundred forty-three million, one hundred three thousand, one hundred forty-five".