331160161 has 2 divisors, whose sum is σ = 331160162. Its totient is φ = 331160160.

The previous prime is 331160149. The next prime is 331160171. The reversal of 331160161 is 161061133.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 328334400 + 2825761 = 18120^2 + 1681^2 .

It is an emirp because it is prime and its reverse (161061133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331160161 - 2¹⁷ = 331029089 is a prime.

It is not a weakly prime, because it can be changed into another prime (331160131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165580080 + 165580081.

It is an arithmetic number, because the mean of its divisors is an integer number (165580081).

Almost surely, 2^331160161 is an apocalyptic number.

It is an amenable number.

331160161 is a deficient number, since it is larger than the sum of its proper divisors (1).

331160161 is an equidigital number, since it uses as much as digits as its factorization.

331160161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 331160161 is about 18197.8064886953. The cubic root of 331160161 is about 691.8511943782.

The spelling of 331160161 in words is "three hundred thirty-one million, one hundred sixty thousand, one hundred sixty-one".