231021002320123 has 2 divisors, whose sum is σ = 231021002320124. Its totient is φ = 231021002320122.

The previous prime is 231021002320079. The next prime is 231021002320153. The reversal of 231021002320123 is 321023200120132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231021002320123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231021002320094 and 231021002320103.

It is not a weakly prime, because it can be changed into another prime (231021002320153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115510501160061 + 115510501160062.

It is an arithmetic number, because the mean of its divisors is an integer number (115510501160062).

Almost surely, 2^{231021002320123} is an apocalyptic number.

231021002320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

231021002320123 is an equidigital number, since it uses as much as digits as its factorization.

231021002320123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 231021002320123 its reverse (321023200120132), we get a palindrome (552044202440255).

The spelling of 231021002320123 in words is "two hundred thirty-one trillion, twenty-one billion, two million, three hundred twenty thousand, one hundred twenty-three".