3122256689 has 4 divisors (see below), whose sum is σ = 3125200500. Its totient is φ = 3119312880.

The previous prime is 3122256611. The next prime is 3122256691. The reversal of 3122256689 is 9866522213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9866522213 = 449 ⋅21974437.

It can be written as a sum of positive squares in 2 ways, for example, as 2623181089 + 499075600 = 51217^2 + 22340^2 .

It is a cyclic number.

It is not a de Polignac number, because 3122256689 - 2²⁴ = 3105479473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3122256089) 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 3 ways as a sum of consecutive naturals, for example, 1470314 + ... + 1472435.

It is an arithmetic number, because the mean of its divisors is an integer number (781300125).

Almost surely, 2^3122256689 is an apocalyptic number.

It is an amenable number.

3122256689 is a deficient number, since it is larger than the sum of its proper divisors (2943811).

3122256689 is a wasteful number, since it uses less digits than its factorization.

3122256689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2943810.

The product of its digits is 311040, while the sum is 44.

The square root of 3122256689 is about 55877.1571306200. The cubic root of 3122256689 is about 1461.5809310575.

The spelling of 3122256689 in words is "three billion, one hundred twenty-two million, two hundred fifty-six thousand, six hundred eighty-nine".