161233 has 2 divisors, whose sum is σ = 161234. Its totient is φ = 161232.

The previous prime is 161221. The next prime is 161237. The reversal of 161233 is 332161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153664 + 7569 = 392^2 + 87^2 .

It is an emirp because it is prime and its reverse (332161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 161233 - 2⁵ = 161201 is a prime.

It is not a weakly prime, because it can be changed into another prime (161237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80616 + 80617.

It is an arithmetic number, because the mean of its divisors is an integer number (80617).

2¹⁶¹²³³ is an apocalyptic number.

It is an amenable number.

161233 is a deficient number, since it is larger than the sum of its proper divisors (1).

161233 is an equidigital number, since it uses as much as digits as its factorization.

161233 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 161233 is about 401.5382920719. The cubic root of 161233 is about 54.4274488423.

Adding to 161233 its reverse (332161), we get a palindrome (493394).

The spelling of 161233 in words is "one hundred sixty-one thousand, two hundred thirty-three".