3031305140 has 12 divisors (see below), whose sum is σ = 6365740836. Its totient is φ = 1212522048.

The previous prime is 3031305133. The next prime is 3031305143. The reversal of 3031305140 is 415031303.

It is a happy number.

3031305140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2076989476 + 954315664 = 45574^2 + 30892^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 151565257 = 3031305140 / (3 + 0 + 3 + 1 + 3 + 0 + 5 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3031305143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75782609 + ... + 75782648.

It is an arithmetic number, because the mean of its divisors is an integer number (530478403).

Almost surely, 2^3031305140 is an apocalyptic number.

It is an amenable number.

3031305140 is an abundant number, since it is smaller than the sum of its proper divisors (3334435696).

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

3031305140 is a wasteful number, since it uses less digits than its factorization.

3031305140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151565266 (or 151565264 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 3031305140 is about 55057.2896172705. The cubic root of 3031305140 is about 1447.2488683102.

Adding to 3031305140 its reverse (415031303), we get a palindrome (3446336443).

The spelling of 3031305140 in words is "three billion, thirty-one million, three hundred five thousand, one hundred forty".