123134143431243 has 16 divisors (see below), whose sum is σ = 187635853451520. Its totient is φ = 70361290305696.

The previous prime is 123134143431209. The next prime is 123134143431251. The reversal of 123134143431243 is 342134341431321.

It is not a de Polignac number, because 123134143431243 - 2⁹ = 123134143430731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (123134143431253) 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, 43485213 + ... + 46230206.

It is an arithmetic number, because the mean of its divisors is an integer number (11727240840720).

Almost surely, 2^{123134143431243} is an apocalyptic number.

123134143431243 is a deficient number, since it is larger than the sum of its proper divisors (64501710020277).

123134143431243 is an equidigital number, since it uses as much as digits as its factorization.

123134143431243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89780786.

The product of its digits is 248832, while the sum is 39.

Adding to 123134143431243 its reverse (342134341431321), we get a palindrome (465268484862564).

The spelling of 123134143431243 in words is "one hundred twenty-three trillion, one hundred thirty-four billion, one hundred forty-three million, four hundred thirty-one thousand, two hundred forty-three".