3121072873 has 8 divisors (see below), whose sum is σ = 3156021792. Its totient is φ = 3086180736.

The previous prime is 3121072849. The next prime is 3121072921. The reversal of 3121072873 is 3782701213.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3121072873 - 2¹⁷ = 3120941801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121072573) 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, 101586 + ... + 128692.

It is an arithmetic number, because the mean of its divisors is an integer number (394502724).

Almost surely, 2^3121072873 is an apocalyptic number.

It is an amenable number.

3121072873 is a deficient number, since it is larger than the sum of its proper divisors (34948919).

3121072873 is a wasteful number, since it uses less digits than its factorization.

3121072873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28391.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 3121072873 is about 55866.5631035237. The cubic root of 3121072873 is about 1461.3961863054.

The spelling of 3121072873 in words is "three billion, one hundred twenty-one million, seventy-two thousand, eight hundred seventy-three".