243023145 has 8 divisors (see below), whose sum is σ = 388837056. Its totient is φ = 129612336.

The previous prime is 243023101. The next prime is 243023147. The reversal of 243023145 is 541320342.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 243023145 - 2⁷ = 243023017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (243023147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8100757 + ... + 8100786.

It is an arithmetic number, because the mean of its divisors is an integer number (48604632).

Almost surely, 2^243023145 is an apocalyptic number.

It is an amenable number.

243023145 is a deficient number, since it is larger than the sum of its proper divisors (145813911).

243023145 is a wasteful number, since it uses less digits than its factorization.

243023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16201551.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 243023145 is about 15589.1996266646. The cubic root of 243023145 is about 624.0449584430.

Adding to 243023145 its reverse (541320342), we get a palindrome (784343487).

The spelling of 243023145 in words is "two hundred forty-three million, twenty-three thousand, one hundred forty-five".