43023161 has 2 divisors, whose sum is σ = 43023162. Its totient is φ = 43023160.

The previous prime is 43023143. The next prime is 43023173. The reversal of 43023161 is 16132034.

43023161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42981136 + 42025 = 6556^2 + 205^2 .

It is a cyclic number.

It is not a de Polignac number, because 43023161 - 2²² = 38828857 is a prime.

It is not a weakly prime, because it can be changed into another prime (43023131) 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, 21511580 + 21511581.

It is an arithmetic number, because the mean of its divisors is an integer number (21511581).

Almost surely, 2^43023161 is an apocalyptic number.

It is an amenable number.

43023161 is a deficient number, since it is larger than the sum of its proper divisors (1).

43023161 is an equidigital number, since it uses as much as digits as its factorization.

43023161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 43023161 is about 6559.2042962542. The cubic root of 43023161 is about 350.4026956808.

Adding to 43023161 its reverse (16132034), we get a palindrome (59155195).

The spelling of 43023161 in words is "forty-three million, twenty-three thousand, one hundred sixty-one".