161327123 has 6 divisors (see below), whose sum is σ = 163636452. Its totient is φ = 159049940.

The previous prime is 161327107. The next prime is 161327191. The reversal of 161327123 is 321723161.

It is not a de Polignac number, because 161327123 - 2⁴ = 161327107 is a prime.

It is a super-4 number, since 4×161327123⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 161327092 and 161327101.

It is not an unprimeable number, because it can be changed into a prime (161321123) 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 5 ways as a sum of consecutive naturals, for example, 10961 + ... + 21042.

It is an arithmetic number, because the mean of its divisors is an integer number (27272742).

Almost surely, 2^161327123 is an apocalyptic number.

161327123 is a deficient number, since it is larger than the sum of its proper divisors (2309329).

161327123 is an frugal number, since it uses more digits than its factorization.

161327123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32145 (or 32074 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 161327123 is about 12701.4614513449. The cubic root of 161327123 is about 544.3803782066.

The spelling of 161327123 in words is "one hundred sixty-one million, three hundred twenty-seven thousand, one hundred twenty-three".