331034161 has 2 divisors, whose sum is σ = 331034162. Its totient is φ = 331034160.

The previous prime is 331034117. The next prime is 331034219. The reversal of 331034161 is 161430133.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330112561 + 921600 = 18169^2 + 960^2 .

It is an emirp because it is prime and its reverse (161430133) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 331034161 - 2¹⁹ = 330509873 is a prime.

It is not a weakly prime, because it can be changed into another prime (331032161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165517080 + 165517081.

It is an arithmetic number, because the mean of its divisors is an integer number (165517081).

Almost surely, 2^331034161 is an apocalyptic number.

It is an amenable number.

331034161 is a deficient number, since it is larger than the sum of its proper divisors (1).

331034161 is an equidigital number, since it uses as much as digits as its factorization.

331034161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 331034161 is about 18194.3442036255. The cubic root of 331034161 is about 691.7634379399.

Adding to 331034161 its reverse (161430133), we get a palindrome (492464294).

The spelling of 331034161 in words is "three hundred thirty-one million, thirty-four thousand, one hundred sixty-one".