243102011123 has 4 divisors (see below), whose sum is σ = 243566833848. Its totient is φ = 242637188400.

The previous prime is 243102011107. The next prime is 243102011137. The reversal of 243102011123 is 321110201342.

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 243102011123 - 2⁴ = 243102011107 is a prime.

It is a super-2 number, since 2×243102011123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243102011095 and 243102011104.

It is not an unprimeable number, because it can be changed into a prime (243102011183) 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, 232410578 + ... + 232411623.

It is an arithmetic number, because the mean of its divisors is an integer number (60891708462).

Almost surely, 2^243102011123 is an apocalyptic number.

243102011123 is a deficient number, since it is larger than the sum of its proper divisors (464822725).

243102011123 is an equidigital number, since it uses as much as digits as its factorization.

243102011123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464822724.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 243102011123 its reverse (321110201342), we get a palindrome (564212212465).

The spelling of 243102011123 in words is "two hundred forty-three billion, one hundred two million, eleven thousand, one hundred twenty-three".