161323 has 2 divisors, whose sum is σ = 161324. Its totient is φ = 161322.

The previous prime is 161309. The next prime is 161333. The reversal of 161323 is 323161.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161323 is a prime.

It is a super-2 number, since 2×161323² = 52050220658, which contains 22 as substring.

161323 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 161297 and 161306.

It is not a weakly prime, because it can be changed into another prime (161303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80661 + 80662.

It is an arithmetic number, because the mean of its divisors is an integer number (80662).

2¹⁶¹³²³ is an apocalyptic number.

161323 is a deficient number, since it is larger than the sum of its proper divisors (1).

161323 is an equidigital number, since it uses as much as digits as its factorization.

161323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 16.

The square root of 161323 is about 401.6503454499. The cubic root of 161323 is about 54.4375740633.

Adding to 161323 its reverse (323161), we get a palindrome (484484).

It can be divided in two parts, 161 and 323, that multiplied together give a triangular number (52003 = T₃₂₂).

The spelling of 161323 in words is "one hundred sixty-one thousand, three hundred twenty-three".