3117221605 has 8 divisors (see below), whose sum is σ = 3937543200. Its totient is φ = 2362525776.

The previous prime is 3117221599. The next prime is 3117221623. The reversal of 3117221605 is 5061227113.

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 3117221605 - 2¹¹ = 3117219557 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 16406335 + ... + 16406524.

It is an arithmetic number, because the mean of its divisors is an integer number (492192900).

Almost surely, 2^3117221605 is an apocalyptic number.

It is an amenable number.

3117221605 is a deficient number, since it is larger than the sum of its proper divisors (820321595).

3117221605 is a wasteful number, since it uses less digits than its factorization.

3117221605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32812883.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 3117221605 is about 55832.0840108982. The cubic root of 3117221605 is about 1460.7948391425.

Adding to 3117221605 its reverse (5061227113), we get a palindrome (8178448718).

The spelling of 3117221605 in words is "three billion, one hundred seventeen million, two hundred twenty-one thousand, six hundred five".