3123121130 has 16 divisors (see below), whose sum is σ = 5623005960. Its totient is φ = 1248940032.

The previous prime is 3123121117. The next prime is 3123121139. The reversal of 3123121130 is 311213213.

It can be written as a sum of positive squares in 4 ways, for example, as 3004245721 + 118875409 = 54811^2 + 10903^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3123121099 and 3123121108.

It is not an unprimeable number, because it can be changed into a prime (3123121139) 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, 6482 + ... + 79298.

Almost surely, 2^3123121130 is an apocalyptic number.

3123121130 is a deficient number, since it is larger than the sum of its proper divisors (2499884830).

3123121130 is a wasteful number, since it uses less digits than its factorization.

3123121130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77113.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 3123121130 is about 55884.8917866001. The cubic root of 3123121130 is about 1461.7158050737.

Adding to 3123121130 its reverse (311213213), we get a palindrome (3434334343).

The spelling of 3123121130 in words is "three billion, one hundred twenty-three million, one hundred twenty-one thousand, one hundred thirty".