3139240321 has 24 divisors (see below), whose sum is σ = 3775632576. Its totient is φ = 2600488800.

The previous prime is 3139240319. The next prime is 3139240339. The reversal of 3139240321 is 1230429313.

It is not a de Polignac number, because 3139240321 - 2¹ = 3139240319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3139240321.

It is not an unprimeable number, because it can be changed into a prime (3139240381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 268030 + ... + 279496.

It is an arithmetic number, because the mean of its divisors is an integer number (157318024).

Almost surely, 2^3139240321 is an apocalyptic number.

It is an amenable number.

3139240321 is a deficient number, since it is larger than the sum of its proper divisors (636392255).

3139240321 is a wasteful number, since it uses less digits than its factorization.

3139240321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11669 (or 11662 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 3139240321 is about 56028.9239678936. The cubic root of 3139240321 is about 1464.2262484462.

Adding to 3139240321 its reverse (1230429313), we get a palindrome (4369669634).

The spelling of 3139240321 in words is "three billion, one hundred thirty-nine million, two hundred forty thousand, three hundred twenty-one".