231344123 has 2 divisors, whose sum is σ = 231344124. Its totient is φ = 231344122.

The previous prime is 231344119. The next prime is 231344129. The reversal of 231344123 is 321443132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231344123 - 2² = 231344119 is a prime.

It is not a weakly prime, because it can be changed into another prime (231344129) 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 as a sum of consecutive naturals, namely, 115672061 + 115672062.

It is an arithmetic number, because the mean of its divisors is an integer number (115672062).

Almost surely, 2^231344123 is an apocalyptic number.

231344123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231344123 is an equidigital number, since it uses as much as digits as its factorization.

231344123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 231344123 is about 15210.0007560815. Note that the first 3 decimals coincide. The cubic root of 231344123 is about 613.8837778302.

Subtracting from 231344123 its sum of digits (23), we obtain a square (231344100 = 15210²).

Adding to 231344123 its reverse (321443132), we get a palindrome (552787255).

Subtracting 231344123 from its reverse (321443132), we obtain a palindrome (90099009).

The spelling of 231344123 in words is "two hundred thirty-one million, three hundred forty-four thousand, one hundred twenty-three".