3181359748 has 72 divisors (see below), whose sum is σ = 6630253056. Its totient is φ = 1308309120.

The previous prime is 3181359733. The next prime is 3181359749. The reversal of 3181359748 is 8479531813.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3181359749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3685965 + ... + 3686827.

It is an arithmetic number, because the mean of its divisors is an integer number (92086848).

Almost surely, 2^3181359748 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 3181359748, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3315126528).

3181359748 is an abundant number, since it is smaller than the sum of its proper divisors (3448893308).

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

3181359748 is a wasteful number, since it uses less digits than its factorization.

3181359748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1073 (or 1040 counting only the distinct ones).

The product of its digits is 725760, while the sum is 49.

The square root of 3181359748 is about 56403.5437539167. The cubic root of 3181359748 is about 1470.7457224884.

The spelling of 3181359748 in words is "three billion, one hundred eighty-one million, three hundred fifty-nine thousand, seven hundred forty-eight".