123353161 has 2 divisors, whose sum is σ = 123353162. Its totient is φ = 123353160.

The previous prime is 123353147. The next prime is 123353179. The reversal of 123353161 is 161353321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89189136 + 34164025 = 9444^2 + 5845^2 .

It is an emirp because it is prime and its reverse (161353321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123353161 - 2⁷ = 123353033 is a prime.

It is not a weakly prime, because it can be changed into another prime (123353261) 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, 61676580 + 61676581.

It is an arithmetic number, because the mean of its divisors is an integer number (61676581).

Almost surely, 2^123353161 is an apocalyptic number.

It is an amenable number.

123353161 is a deficient number, since it is larger than the sum of its proper divisors (1).

123353161 is an equidigital number, since it uses as much as digits as its factorization.

123353161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 25.

The square root of 123353161 is about 11106.4468215537. The cubic root of 123353161 is about 497.7945005148.

The spelling of 123353161 in words is "one hundred twenty-three million, three hundred fifty-three thousand, one hundred sixty-one".