320126161 has 2 divisors, whose sum is σ = 320126162. Its totient is φ = 320126160.

The previous prime is 320126113. The next prime is 320126171. The reversal of 320126161 is 161621023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 257795136 + 62331025 = 16056^2 + 7895^2 .

It is a cyclic number.

It is not a de Polignac number, because 320126161 - 2⁷ = 320126033 is a prime.

It is not a weakly prime, because it can be changed into another prime (320126101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160063080 + 160063081.

It is an arithmetic number, because the mean of its divisors is an integer number (160063081).

Almost surely, 2^320126161 is an apocalyptic number.

It is an amenable number.

320126161 is a deficient number, since it is larger than the sum of its proper divisors (1).

320126161 is an equidigital number, since it uses as much as digits as its factorization.

320126161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 320126161 is about 17892.0697796538. The cubic root of 320126161 is about 684.0802553084.

Adding to 320126161 its reverse (161621023), we get a palindrome (481747184).

The spelling of 320126161 in words is "three hundred twenty million, one hundred twenty-six thousand, one hundred sixty-one".