243035145 has 24 divisors (see below), whose sum is σ = 446042376. Its totient is φ = 121993728.

The previous prime is 243035081. The next prime is 243035153. The reversal of 243035145 is 541530342.

243035145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 121616784 + 121418361 = 11028^2 + 11019^2 .

It is not a de Polignac number, because 243035145 - 2⁶ = 243035081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158082 + ... + 159611.

It is an arithmetic number, because the mean of its divisors is an integer number (18585099).

Almost surely, 2^243035145 is an apocalyptic number.

It is an amenable number.

243035145 is a deficient number, since it is larger than the sum of its proper divisors (203007231).

243035145 is a wasteful number, since it uses less digits than its factorization.

243035145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317721 (or 317718 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 243035145 is about 15589.5845037640. The cubic root of 243035145 is about 624.0552296406.

Adding to 243035145 its reverse (541530342), we get a palindrome (784565487).

The spelling of 243035145 in words is "two hundred forty-three million, thirty-five thousand, one hundred forty-five".