3208020997 has 2 divisors, whose sum is σ = 3208020998. Its totient is φ = 3208020996.

The previous prime is 3208020943. The next prime is 3208021007. The reversal of 3208020997 is 7990208023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2700465156 + 507555841 = 51966^2 + 22529^2 .

It is a cyclic number.

It is not a de Polignac number, because 3208020997 - 2²³ = 3199632389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3208020917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1604010498 + 1604010499.

It is an arithmetic number, because the mean of its divisors is an integer number (1604010499).

Almost surely, 2^3208020997 is an apocalyptic number.

It is an amenable number.

3208020997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3208020997 is an equidigital number, since it uses as much as digits as its factorization.

3208020997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 3208020997 is about 56639.3943911832. The cubic root of 3208020997 is about 1474.8428057320.

The spelling of 3208020997 in words is "three billion, two hundred eight million, twenty thousand, nine hundred ninety-seven".