123355171 has 2 divisors, whose sum is σ = 123355172. Its totient is φ = 123355170.

The previous prime is 123355139. The next prime is 123355189. The reversal of 123355171 is 171553321.

It is a strong prime.

It is an emirp because it is prime and its reverse (171553321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123355171 - 2⁵ = 123355139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123355121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61677585 + 61677586.

It is an arithmetic number, because the mean of its divisors is an integer number (61677586).

Almost surely, 2^123355171 is an apocalyptic number.

123355171 is a deficient number, since it is larger than the sum of its proper divisors (1).

123355171 is an equidigital number, since it uses as much as digits as its factorization.

123355171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3150, while the sum is 28.

The square root of 123355171 is about 11106.5373091707. The cubic root of 123355171 is about 497.7972043004.

The spelling of 123355171 in words is "one hundred twenty-three million, three hundred fifty-five thousand, one hundred seventy-one".