3121227809 has 16 divisors (see below), whose sum is σ = 3628279680. Its totient is φ = 2629532160.

The previous prime is 3121227797. The next prime is 3121227817. The reversal of 3121227809 is 9087221213.

It is a cyclic number.

It is not a de Polignac number, because 3121227809 - 2⁸ = 3121227553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121227859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1105802 + ... + 1108620.

It is an arithmetic number, because the mean of its divisors is an integer number (226767480).

Almost surely, 2^3121227809 is an apocalyptic number.

It is an amenable number.

3121227809 is a deficient number, since it is larger than the sum of its proper divisors (507051871).

3121227809 is a wasteful number, since it uses less digits than its factorization.

3121227809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 3121227809 is about 55867.9497475968. The cubic root of 3121227809 is about 1461.4203680683.

The spelling of 3121227809 in words is "three billion, one hundred twenty-one million, two hundred twenty-seven thousand, eight hundred nine".