321031602612161 has 8 divisors (see below), whose sum is σ = 366896010716160. Its totient is φ = 275167882155168.

The previous prime is 321031602612121. The next prime is 321031602612163. The reversal of 321031602612161 is 161216206130123.

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

It is a cyclic number.

It is not a de Polignac number, because 321031602612161 - 2¹⁴ = 321031602595777 is a prime.

It is a super-2 number, since 2×321031602612161² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321031602612163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170910956 + ... + 172779101.

It is an arithmetic number, because the mean of its divisors is an integer number (45862001339520).

Almost surely, 2^{321031602612161} is an apocalyptic number.

It is an amenable number.

321031602612161 is a deficient number, since it is larger than the sum of its proper divisors (45864408103999).

321031602612161 is a wasteful number, since it uses less digits than its factorization.

321031602612161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343823503.

The product of its (nonzero) digits is 15552, while the sum is 35.

Adding to 321031602612161 its reverse (161216206130123), we get a palindrome (482247808742284).

The spelling of 321031602612161 in words is "three hundred twenty-one trillion, thirty-one billion, six hundred two million, six hundred twelve thousand, one hundred sixty-one".