3265161321 has 32 divisors (see below), whose sum is σ = 4738196736. Its totient is φ = 1991936000.

The previous prime is 3265161313. The next prime is 3265161323. The reversal of 3265161321 is 1231615623.

It is a cyclic number.

It is not a de Polignac number, because 3265161321 - 2³ = 3265161313 is a prime.

It is a super-2 number, since 2×3265161321² = 21322556904308930082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3265161323) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 647791 + ... + 652811.

It is an arithmetic number, because the mean of its divisors is an integer number (148068648).

Almost surely, 2^3265161321 is an apocalyptic number.

It is an amenable number.

3265161321 is a deficient number, since it is larger than the sum of its proper divisors (1473035415).

3265161321 is a wasteful number, since it uses less digits than its factorization.

3265161321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5393.

The product of its digits is 6480, while the sum is 30.

The square root of 3265161321 is about 57141.5901161317. The cubic root of 3265161321 is about 1483.5478132090.

Adding to 3265161321 its reverse (1231615623), we get a palindrome (4496776944).

The spelling of 3265161321 in words is "three billion, two hundred sixty-five million, one hundred sixty-one thousand, three hundred twenty-one".