3120440252321 has 20 divisors (see below), whose sum is σ = 3664728964500. Its totient is φ = 2656712009952.

The previous prime is 3120440252309. The next prime is 3120440252341. The reversal of 3120440252321 is 1232520440213.

It can be written as a sum of positive squares in 2 ways, for example, as 956658091921 + 2163782160400 = 978089^2 + 1470980^2 .

It is not a de Polignac number, because 3120440252321 - 2¹⁴ = 3120440235937 is a prime.

It is a super-2 number, since 2×3120440252321² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3120440252341) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4003466 + ... + 4718963.

It is an arithmetic number, because the mean of its divisors is an integer number (183236448225).

Almost surely, 2^{3120440252321} is an apocalyptic number.

It is an amenable number.

3120440252321 is a deficient number, since it is larger than the sum of its proper divisors (544288712179).

3120440252321 is an frugal number, since it uses more digits than its factorization.

3120440252321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722606 (or 8722585 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 3120440252321 its reverse (1232520440213), we get a palindrome (4352960692534).

The spelling of 3120440252321 in words is "three trillion, one hundred twenty billion, four hundred forty million, two hundred fifty-two thousand, three hundred twenty-one".