123100169 has 2 divisors, whose sum is σ = 123100170. Its totient is φ = 123100168.

The previous prime is 123100139. The next prime is 123100171. The reversal of 123100169 is 961001321.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121264144 + 1836025 = 11012^2 + 1355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123100169 is a prime.

It is a super-2 number, since 2×123100169² = 30307303215657122, which contains 22 as substring.

Together with 123100171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123100129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61550084 + 61550085.

It is an arithmetic number, because the mean of its divisors is an integer number (61550085).

Almost surely, 2^123100169 is an apocalyptic number.

It is an amenable number.

123100169 is a deficient number, since it is larger than the sum of its proper divisors (1).

123100169 is an equidigital number, since it uses as much as digits as its factorization.

123100169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 123100169 is about 11095.0515546346. The cubic root of 123100169 is about 497.4539492572.

The spelling of 123100169 in words is "one hundred twenty-three million, one hundred thousand, one hundred sixty-nine".