243155132223 has 4 divisors (see below), whose sum is σ = 324206842968. Its totient is φ = 162103421480.

The previous prime is 243155132191. The next prime is 243155132287. The reversal of 243155132223 is 322231551342.

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

It is a cyclic number.

It is not a de Polignac number, because 243155132223 - 2⁵ = 243155132191 is a prime.

It is a super-2 number, since 2×243155132223² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243155131223) 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, 40525855368 + ... + 40525855373.

It is an arithmetic number, because the mean of its divisors is an integer number (81051710742).

Almost surely, 2^243155132223 is an apocalyptic number.

243155132223 is a deficient number, since it is larger than the sum of its proper divisors (81051710745).

243155132223 is an equidigital number, since it uses as much as digits as its factorization.

243155132223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81051710744.

The product of its digits is 43200, while the sum is 33.

Adding to 243155132223 its reverse (322231551342), we get a palindrome (565386683565).

The spelling of 243155132223 in words is "two hundred forty-three billion, one hundred fifty-five million, one hundred thirty-two thousand, two hundred twenty-three".