3136605221 has 2 divisors, whose sum is σ = 3136605222. Its totient is φ = 3136605220.

The previous prime is 3136605211. The next prime is 3136605271. The reversal of 3136605221 is 1225066313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2732152900 + 404452321 = 52270^2 + 20111^2 .

It is an emirp because it is prime and its reverse (1225066313) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3136605221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3136605211) 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 as a sum of consecutive naturals, namely, 1568302610 + 1568302611.

It is an arithmetic number, because the mean of its divisors is an integer number (1568302611).

Almost surely, 2^3136605221 is an apocalyptic number.

It is an amenable number.

3136605221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3136605221 is an equidigital number, since it uses as much as digits as its factorization.

3136605221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3136605221 is about 56005.4034982340. The cubic root of 3136605221 is about 1463.8164398852.

The spelling of 3136605221 in words is "three billion, one hundred thirty-six million, six hundred five thousand, two hundred twenty-one".