3123125540 has 24 divisors (see below), whose sum is σ = 6562072440. Its totient is φ = 1248581888.

The previous prime is 3123125461. The next prime is 3123125567. The reversal of 3123125540 is 455213213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1221642304 + 1901483236 = 34952^2 + 43606^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2555 + ... + 79074.

It is an arithmetic number, because the mean of its divisors is an integer number (273419685).

Almost surely, 2^3123125540 is an apocalyptic number.

It is an amenable number.

3123125540 is an abundant number, since it is smaller than the sum of its proper divisors (3438946900).

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

3123125540 is a wasteful number, since it uses less digits than its factorization.

3123125540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83551 (or 83549 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3123125540 is about 55884.9312426883. The cubic root of 3123125540 is about 1461.7164930782.

Adding to 3123125540 its reverse (455213213), we get a palindrome (3578338753).

The spelling of 3123125540 in words is "three billion, one hundred twenty-three million, one hundred twenty-five thousand, five hundred forty".