3111243140 has 12 divisors (see below), whose sum is σ = 6533610636. Its totient is φ = 1244497248.

The previous prime is 3111243101. The next prime is 3111243169. The reversal of 3111243140 is 413421113.

3111243140 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 409738564 + 2701504576 = 20242^2 + 51976^2 .

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: 155562157 = 3111243140 / (3 + 1 + 1 + 1 + 2 + 4 + 3 + 1 + 4 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77781059 + ... + 77781098.

It is an arithmetic number, because the mean of its divisors is an integer number (544467553).

Almost surely, 2^3111243140 is an apocalyptic number.

It is an amenable number.

3111243140 is an abundant number, since it is smaller than the sum of its proper divisors (3422367496).

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

3111243140 is a wasteful number, since it uses less digits than its factorization.

3111243140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155562166 (or 155562164 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 3111243140 is about 55778.5186250047. The cubic root of 3111243140 is about 1459.8603638269.

Adding to 3111243140 its reverse (413421113), we get a palindrome (3524664253).

The spelling of 3111243140 in words is "three billion, one hundred eleven million, two hundred forty-three thousand, one hundred forty".