3117221623 has 2 divisors, whose sum is σ = 3117221624. Its totient is φ = 3117221622.

The previous prime is 3117221599. The next prime is 3117221633. The reversal of 3117221623 is 3261227113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3117221623 - 2²¹ = 3115124471 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3117221591 and 3117221600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3117221633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1558610811 + 1558610812.

It is an arithmetic number, because the mean of its divisors is an integer number (1558610812).

Almost surely, 2^3117221623 is an apocalyptic number.

3117221623 is a deficient number, since it is larger than the sum of its proper divisors (1).

3117221623 is an equidigital number, since it uses as much as digits as its factorization.

3117221623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 3117221623 is about 55832.0841720959. The cubic root of 3117221623 is about 1460.7948419542.

Adding to 3117221623 its reverse (3261227113), we get a palindrome (6378448736).

The spelling of 3117221623 in words is "three billion, one hundred seventeen million, two hundred twenty-one thousand, six hundred twenty-three".