123320101231 has 2 divisors, whose sum is σ = 123320101232. Its totient is φ = 123320101230.

The previous prime is 123320101187. The next prime is 123320101241. The reversal of 123320101231 is 132101023321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123320101231 - 2⁹ = 123320100719 is a prime.

It is a super-2 number, since 2×123320101231² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123320101199 and 123320101208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123320101241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61660050615 + 61660050616.

It is an arithmetic number, because the mean of its divisors is an integer number (61660050616).

Almost surely, 2^123320101231 is an apocalyptic number.

123320101231 is a deficient number, since it is larger than the sum of its proper divisors (1).

123320101231 is an equidigital number, since it uses as much as digits as its factorization.

123320101231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 123320101231 its reverse (132101023321), we get a palindrome (255421124552).

The spelling of 123320101231 in words is "one hundred twenty-three billion, three hundred twenty million, one hundred one thousand, two hundred thirty-one".