331650305165 has 4 divisors (see below), whose sum is σ = 397980366204. Its totient is φ = 265320244128.

The previous prime is 331650305149. The next prime is 331650305183. The reversal of 331650305165 is 561503056133.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 561503056133 = 13291 ⋅42246863.

It can be written as a sum of positive squares in 2 ways, for example, as 33450215236 + 298200089929 = 182894^2 + 546077^2 .

It is a cyclic number.

It is not a de Polignac number, because 331650305165 - 2⁴ = 331650305149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33165030512 + ... + 33165030521.

It is an arithmetic number, because the mean of its divisors is an integer number (99495091551).

Almost surely, 2^331650305165 is an apocalyptic number.

It is an amenable number.

331650305165 is a deficient number, since it is larger than the sum of its proper divisors (66330061039).

331650305165 is an equidigital number, since it uses as much as digits as its factorization.

331650305165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66330061038.

The product of its (nonzero) digits is 121500, while the sum is 38.

The spelling of 331650305165 in words is "three hundred thirty-one billion, six hundred fifty million, three hundred five thousand, one hundred sixty-five".