3139135720 has 64 divisors (see below), whose sum is σ = 8093635200. Its totient is φ = 1073399040.

The previous prime is 3139135693. The next prime is 3139135721. The reversal of 3139135720 is 275319313.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3139135721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91330 + ... + 120910.

It is an arithmetic number, because the mean of its divisors is an integer number (126463050).

Almost surely, 2^3139135720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3139135720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4046817600).

3139135720 is an abundant number, since it is smaller than the sum of its proper divisors (4954499480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3139135720 is a wasteful number, since it uses less digits than its factorization.

3139135720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29978 (or 29974 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 3139135720 is about 56027.9905047468. The cubic root of 3139135720 is about 1464.2099853575.

The spelling of 3139135720 in words is "three billion, one hundred thirty-nine million, one hundred thirty-five thousand, seven hundred twenty".