3112331321 has 32 divisors (see below), whose sum is σ = 3656378880. Its totient is φ = 2617804800.

The previous prime is 3112331311. The next prime is 3112331329. The reversal of 3112331321 is 1231332113.

It is a cyclic number.

It is not a de Polignac number, because 3112331321 - 2²² = 3108137017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3112331293 and 3112331302.

It is not an unprimeable number, because it can be changed into a prime (3112331329) 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, 6751031 + ... + 6751491.

It is an arithmetic number, because the mean of its divisors is an integer number (114261840).

Almost surely, 2^3112331321 is an apocalyptic number.

It is an amenable number.

3112331321 is a deficient number, since it is larger than the sum of its proper divisors (544047559).

3112331321 is a wasteful number, since it uses less digits than its factorization.

3112331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 324, while the sum is 20.

The square root of 3112331321 is about 55788.2722532254. The cubic root of 3112331321 is about 1460.0305430841.

Adding to 3112331321 its reverse (1231332113), we get a palindrome (4343663434).

It can be divided in two parts, 3112 and 331321, that added together give a palindrome (334433).

The spelling of 3112331321 in words is "three billion, one hundred twelve million, three hundred thirty-one thousand, three hundred twenty-one".