231134123 has 4 divisors (see below), whose sum is σ = 252146328. Its totient is φ = 210121920.

The previous prime is 231134119. The next prime is 231134129. The reversal of 231134123 is 321431132.

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 231134123 - 2² = 231134119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231134095 and 231134104.

It is not an unprimeable number, because it can be changed into a prime (231134129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10506086 + ... + 10506107.

It is an arithmetic number, because the mean of its divisors is an integer number (63036582).

Almost surely, 2^231134123 is an apocalyptic number.

231134123 is a deficient number, since it is larger than the sum of its proper divisors (21012205).

231134123 is a wasteful number, since it uses less digits than its factorization.

231134123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21012204.

The product of its digits is 432, while the sum is 20.

The square root of 231134123 is about 15203.0958360460. The cubic root of 231134123 is about 613.6979729225.

Adding to 231134123 its reverse (321431132), we get a palindrome (552565255).

The spelling of 231134123 in words is "two hundred thirty-one million, one hundred thirty-four thousand, one hundred twenty-three".