3120031321 has 8 divisors (see below), whose sum is σ = 3404837088. Its totient is φ = 2835420000.

The previous prime is 3120031319. The next prime is 3120031349. The reversal of 3120031321 is 1231300213.

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 3120031321 - 2¹ = 3120031319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3120031295 and 3120031304.

It is not an unprimeable number, because it can be changed into a prime (3120331321) 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, 13980 + ... + 80221.

It is an arithmetic number, because the mean of its divisors is an integer number (425604636).

Almost surely, 2^3120031321 is an apocalyptic number.

It is an amenable number.

3120031321 is a deficient number, since it is larger than the sum of its proper divisors (284805767).

3120031321 is a wasteful number, since it uses less digits than its factorization.

3120031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97223.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3120031321 is about 55857.2405422968. The cubic root of 3120031321 is about 1461.2336044484.

Adding to 3120031321 its reverse (1231300213), we get a palindrome (4351331534).

The spelling of 3120031321 in words is "three billion, one hundred twenty million, thirty-one thousand, three hundred twenty-one".