3111111440 has 40 divisors (see below), whose sum is σ = 7245172440. Its totient is φ = 1242407936.

The previous prime is 3111111439. The next prime is 3111111449. The reversal of 3111111440 is 441111113.

It can be written as a sum of positive squares in 4 ways, for example, as 299566864 + 2811544576 = 17308^2 + 53024^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (3111111449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17846 + ... + 80874.

It is an arithmetic number, because the mean of its divisors is an integer number (181129311).

Almost surely, 2^3111111440 is an apocalyptic number.

It is an amenable number.

3111111440 is an abundant number, since it is smaller than the sum of its proper divisors (4134061000).

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

3111111440 is a wasteful number, since it uses less digits than its factorization.

3111111440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63659 (or 63653 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 3111111440 is about 55777.3380505022. The cubic root of 3111111440 is about 1459.8397647379.

Adding to 3111111440 its reverse (441111113), we get a palindrome (3552222553).

The spelling of 3111111440 in words is "three billion, one hundred eleven million, one hundred eleven thousand, four hundred forty".