163612123 has 4 divisors (see below), whose sum is σ = 167093280. Its totient is φ = 160130968.

The previous prime is 163612121. The next prime is 163612147. The reversal of 163612123 is 321216361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321216361 = 389 ⋅825749.

It is a cyclic number.

It is not a de Polignac number, because 163612123 - 2¹ = 163612121 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163612121) 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 in 3 ways as a sum of consecutive naturals, for example, 1740508 + ... + 1740601.

It is an arithmetic number, because the mean of its divisors is an integer number (41773320).

Almost surely, 2^163612123 is an apocalyptic number.

163612123 is a deficient number, since it is larger than the sum of its proper divisors (3481157).

163612123 is an equidigital number, since it uses as much as digits as its factorization.

163612123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481156.

The product of its digits is 1296, while the sum is 25.

The square root of 163612123 is about 12791.0954573875. The cubic root of 163612123 is about 546.9384976088.

Adding to 163612123 its reverse (321216361), we get a palindrome (484828484).

The spelling of 163612123 in words is "one hundred sixty-three million, six hundred twelve thousand, one hundred twenty-three".