243475941 has 4 divisors (see below), whose sum is σ = 324634592. Its totient is φ = 162317292.

The previous prime is 243475931. The next prime is 243475943. The reversal of 243475941 is 149574342.

243475941 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243475941 - 2⁶ = 243475877 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 243475941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243475943) 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, 40579321 + ... + 40579326.

It is an arithmetic number, because the mean of its divisors is an integer number (81158648).

Almost surely, 2^243475941 is an apocalyptic number.

It is an amenable number.

243475941 is a deficient number, since it is larger than the sum of its proper divisors (81158651).

243475941 is an equidigital number, since it uses as much as digits as its factorization.

243475941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81158650.

The product of its digits is 120960, while the sum is 39.

The square root of 243475941 is about 15603.7156151988. The cubic root of 243475941 is about 624.4322874668.

The spelling of 243475941 in words is "two hundred forty-three million, four hundred seventy-five thousand, nine hundred forty-one".