243023011 has 16 divisors (see below), whose sum is σ = 303499008. Its totient is φ = 189050400.

The previous prime is 243022957. The next prime is 243023017. The reversal of 243023011 is 110320342.

It is a happy number.

It is not a de Polignac number, because 243023011 - 2⁹ = 243022499 is a prime.

It is a super-2 number, since 2×243023011² = 118120367751012242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243023017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50281 + ... + 54901.

It is an arithmetic number, because the mean of its divisors is an integer number (18968688).

Almost surely, 2^243023011 is an apocalyptic number.

243023011 is a deficient number, since it is larger than the sum of its proper divisors (60475997).

243023011 is a wasteful number, since it uses less digits than its factorization.

243023011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5322.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 243023011 is about 15589.1953288167. The cubic root of 243023011 is about 624.0448437461.

Adding to 243023011 its reverse (110320342), we get a palindrome (353343353).

The spelling of 243023011 in words is "two hundred forty-three million, twenty-three thousand, eleven".