3120535540 has 24 divisors (see below), whose sum is σ = 6554743272. Its totient is φ = 1247905920.

The previous prime is 3120535529. The next prime is 3120535553. The reversal of 3120535540 is 455350213.

It can be written as a sum of positive squares in 4 ways, for example, as 12027024 + 3108508516 = 3468^2 + 55754^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3120535499 and 3120535508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74970 + ... + 108910.

It is an arithmetic number, because the mean of its divisors is an integer number (273114303).

Almost surely, 2^3120535540 is an apocalyptic number.

It is an amenable number.

3120535540 is an abundant number, since it is smaller than the sum of its proper divisors (3434207732).

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

3120535540 is a wasteful number, since it uses less digits than its factorization.

3120535540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38547 (or 38545 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 3120535540 is about 55861.7538213759. The cubic root of 3120535540 is about 1461.3123154169.

Adding to 3120535540 its reverse (455350213), we get a palindrome (3575885753).

The spelling of 3120535540 in words is "three billion, one hundred twenty million, five hundred thirty-five thousand, five hundred forty".