3112305140 has 96 divisors (see below), whose sum is σ = 7791028224. Its totient is φ = 1021870080.

The previous prime is 3112305103. The next prime is 3112305149. The reversal of 3112305140 is 415032113.

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 (3112305149) 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 31 ways as a sum of consecutive naturals, for example, 417284 + ... + 424676.

It is an arithmetic number, because the mean of its divisors is an integer number (81156544).

Almost surely, 2^3112305140 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 3112305140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3895514112).

3112305140 is an abundant number, since it is smaller than the sum of its proper divisors (4678723084).

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

3112305140 is a wasteful number, since it uses less digits than its factorization.

3112305140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7537 (or 7535 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 3112305140 is about 55788.0376066411. The cubic root of 3112305140 is about 1460.0264491362.

Adding to 3112305140 its reverse (415032113), we get a palindrome (3527337253).

The spelling of 3112305140 in words is "three billion, one hundred twelve million, three hundred five thousand, one hundred forty".