9312120973 has 4 divisors (see below), whose sum is σ = 9439684348. Its totient is φ = 9184557600.

The previous prime is 9312120967. The next prime is 9312121003. The reversal of 9312120973 is 3790212139.

It is a happy number.

9312120973 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1895122089 + 7416998884 = 43533^2 + 86122^2 .

It is a cyclic number.

It is not a de Polignac number, because 9312120973 - 2²⁹ = 8775250061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9312120773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63781578 + ... + 63781723.

It is an arithmetic number, because the mean of its divisors is an integer number (2359921087).

Almost surely, 2^9312120973 is an apocalyptic number.

It is an amenable number.

9312120973 is a deficient number, since it is larger than the sum of its proper divisors (127563375).

9312120973 is a wasteful number, since it uses less digits than its factorization.

9312120973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127563374.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 9312120973 is about 96499.3314640055. The cubic root of 9312120973 is about 2103.8569310165.

The spelling of 9312120973 in words is "nine billion, three hundred twelve million, one hundred twenty thousand, nine hundred seventy-three".