231312310123 has 2 divisors, whose sum is σ = 231312310124. Its totient is φ = 231312310122.

The previous prime is 231312310091. The next prime is 231312310129. The reversal of 231312310123 is 321013213132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231312310123 - 2⁵ = 231312310091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231312310094 and 231312310103.

It is not a weakly prime, because it can be changed into another prime (231312310129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656155061 + 115656155062.

It is an arithmetic number, because the mean of its divisors is an integer number (115656155062).

Almost surely, 2^231312310123 is an apocalyptic number.

231312310123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312310123 is an equidigital number, since it uses as much as digits as its factorization.

231312310123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231312310123 its reverse (321013213132), we get a palindrome (552325523255).

The spelling of 231312310123 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred ten thousand, one hundred twenty-three".