163161233 has 2 divisors, whose sum is σ = 163161234. Its totient is φ = 163161232.

The previous prime is 163161217. The next prime is 163161239. The reversal of 163161233 is 332161361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163123984 + 37249 = 12772^2 + 193^2 .

It is a cyclic number.

It is not a de Polignac number, because 163161233 - 2⁴ = 163161217 is a prime.

It is a super-3 number, since 3×163161233³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (163161239) 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, 81580616 + 81580617.

It is an arithmetic number, because the mean of its divisors is an integer number (81580617).

Almost surely, 2^163161233 is an apocalyptic number.

It is an amenable number.

163161233 is a deficient number, since it is larger than the sum of its proper divisors (1).

163161233 is an equidigital number, since it uses as much as digits as its factorization.

163161233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 26.

The square root of 163161233 is about 12773.4581457020. The cubic root of 163161233 is about 546.4356090674.

The spelling of 163161233 in words is "one hundred sixty-three million, one hundred sixty-one thousand, two hundred thirty-three".