243023445 has 24 divisors (see below), whose sum is σ = 481418496. Its totient is φ = 111096288.

The previous prime is 243023399. The next prime is 243023447. The reversal of 243023445 is 544320342.

It is not a de Polignac number, because 243023445 - 2¹¹ = 243021397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 385437 + ... + 386066.

It is an arithmetic number, because the mean of its divisors is an integer number (20059104).

Almost surely, 2^243023445 is an apocalyptic number.

It is an amenable number.

243023445 is a deficient number, since it is larger than the sum of its proper divisors (238395051).

243023445 is a wasteful number, since it uses less digits than its factorization.

243023445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771521 (or 771518 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

The square root of 243023445 is about 15589.2092487079. The cubic root of 243023445 is about 624.0452152271.

Adding to 243023445 its reverse (544320342), we get a palindrome (787343787).

The spelling of 243023445 in words is "two hundred forty-three million, twenty-three thousand, four hundred forty-five".