331065161 has 8 divisors (see below), whose sum is σ = 379153920. Its totient is φ = 283174848.

The previous prime is 331065149. The next prime is 331065167. The reversal of 331065161 is 161560133.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331065161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 331065161.

It is not an unprimeable number, because it can be changed into a prime (331065167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46016 + ... + 52721.

It is an arithmetic number, because the mean of its divisors is an integer number (47394240).

Almost surely, 2^331065161 is an apocalyptic number.

It is an amenable number.

331065161 is a deficient number, since it is larger than the sum of its proper divisors (48088759).

331065161 is an equidigital number, since it uses as much as digits as its factorization.

331065161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99223.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 331065161 is about 18195.1960967724. The cubic root of 331065161 is about 691.7850308747.

The spelling of 331065161 in words is "three hundred thirty-one million, sixty-five thousand, one hundred sixty-one".