231223123123 has 2 divisors, whose sum is σ = 231223123124. Its totient is φ = 231223123122.

The previous prime is 231223123097. The next prime is 231223123169. The reversal of 231223123123 is 321321322132.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231223123123 is a prime.

It is not a weakly prime, because it can be changed into another prime (231223123223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115611561561 + 115611561562.

It is an arithmetic number, because the mean of its divisors is an integer number (115611561562).

Almost surely, 2^231223123123 is an apocalyptic number.

231223123123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231223123123 is an equidigital number, since it uses as much as digits as its factorization.

231223123123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

Adding to 231223123123 its reverse (321321322132), we get a palindrome (552544445255).

The spelling of 231223123123 in words is "two hundred thirty-one billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty-three".