3123121973 has 2 divisors, whose sum is σ = 3123121974. Its totient is φ = 3123121972.

The previous prime is 3123121961. The next prime is 3123121997. The reversal of 3123121973 is 3791213213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3099482929 + 23639044 = 55673^2 + 4862^2 .

It is a cyclic number.

It is not a de Polignac number, because 3123121973 - 2⁶ = 3123121909 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3123121933) 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 as a sum of consecutive naturals, namely, 1561560986 + 1561560987.

It is an arithmetic number, because the mean of its divisors is an integer number (1561560987).

Almost surely, 2^3123121973 is an apocalyptic number.

It is an amenable number.

3123121973 is a deficient number, since it is larger than the sum of its proper divisors (1).

3123121973 is an equidigital number, since it uses as much as digits as its factorization.

3123121973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 3123121973 is about 55884.8993288885. The cubic root of 3123121973 is about 1461.7159365903.

The spelling of 3123121973 in words is "three billion, one hundred twenty-three million, one hundred twenty-one thousand, nine hundred seventy-three".