243023023 has 4 divisors (see below), whose sum is σ = 244654200. Its totient is φ = 241391848.

The previous prime is 243023017. The next prime is 243023029. The reversal of 243023023 is 320320342.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (243023017) and next prime (243023029).

It is a cyclic number.

It is not a de Polignac number, because 243023023 - 2⁹ = 243022511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243023029) 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, 815365 + ... + 815662.

It is an arithmetic number, because the mean of its divisors is an integer number (61163550).

Almost surely, 2^243023023 is an apocalyptic number.

243023023 is a deficient number, since it is larger than the sum of its proper divisors (1631177).

243023023 is a wasteful number, since it uses less digits than its factorization.

243023023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631176.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 243023023 is about 15589.1957136986. The cubic root of 243023023 is about 624.0448540174.

Adding to 243023023 its reverse (320320342), we get a palindrome (563343365).

The spelling of 243023023 in words is "two hundred forty-three million, twenty-three thousand, twenty-three".