40230161 has 2 divisors, whose sum is σ = 40230162. Its totient is φ = 40230160.

The previous prime is 40230131. The next prime is 40230191. The reversal of 40230161 is 16103204.

40230161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (40230131) and next prime (40230191).

It can be written as a sum of positive squares in only one way, i.e., 21911761 + 18318400 = 4681^2 + 4280^2 .

It is a cyclic number.

It is not a de Polignac number, because 40230161 - 2¹⁴ = 40213777 is a prime.

It is a super-3 number, since 3×40230161³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40230131) 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, 20115080 + 20115081.

It is an arithmetic number, because the mean of its divisors is an integer number (20115081).

Almost surely, 2^40230161 is an apocalyptic number.

It is an amenable number.

40230161 is a deficient number, since it is larger than the sum of its proper divisors (1).

40230161 is an equidigital number, since it uses as much as digits as its factorization.

40230161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40230161 is about 6342.7250452783. The cubic root of 40230161 is about 342.6498848480.

Adding to 40230161 its reverse (16103204), we get a palindrome (56333365).

The spelling of 40230161 in words is "forty million, two hundred thirty thousand, one hundred sixty-one".