3117221641 has 2 divisors, whose sum is σ = 3117221642. Its totient is φ = 3117221640.

The previous prime is 3117221633. The next prime is 3117221651. The reversal of 3117221641 is 1461227113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2557426041 + 559795600 = 50571^2 + 23660^2 .

It is a cyclic number.

It is not a de Polignac number, because 3117221641 - 2³ = 3117221633 is a prime.

It is not a weakly prime, because it can be changed into another prime (3117221651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558610820 + 1558610821.

It is an arithmetic number, because the mean of its divisors is an integer number (1558610821).

Almost surely, 2^3117221641 is an apocalyptic number.

It is an amenable number.

3117221641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117221641 is an equidigital number, since it uses as much as digits as its factorization.

3117221641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 28.

The square root of 3117221641 is about 55832.0843332935. The cubic root of 3117221641 is about 1460.7948447660.

Adding to 3117221641 its reverse (1461227113), we get a palindrome (4578448754).

The spelling of 3117221641 in words is "three billion, one hundred seventeen million, two hundred twenty-one thousand, six hundred forty-one".