3130320440 has 64 divisors (see below), whose sum is σ = 7605813600. Its totient is φ = 1152640512.

The previous prime is 3130320421. The next prime is 3130320443. The reversal of 3130320440 is 440230313.

3130320440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130320443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185891 + ... + 202029.

Almost surely, 2^3130320440 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 3130320440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3802906800).

3130320440 is an abundant number, since it is smaller than the sum of its proper divisors (4475493160).

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

3130320440 is a wasteful number, since it uses less digits than its factorization.

3130320440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16536 (or 16532 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

The square root of 3130320440 is about 55949.2666618607. The cubic root of 3130320440 is about 1462.8381085962.

Adding to 3130320440 its reverse (440230313), we get a palindrome (3570550753).

The spelling of 3130320440 in words is "three billion, one hundred thirty million, three hundred twenty thousand, four hundred forty".