3217920413 has 2 divisors, whose sum is σ = 3217920414. Its totient is φ = 3217920412.

The previous prime is 3217920397. The next prime is 3217920443. The reversal of 3217920413 is 3140297123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3026430169 + 191490244 = 55013^2 + 13838^2 .

It is a cyclic number.

It is not a de Polignac number, because 3217920413 - 2⁴ = 3217920397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3217920413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3217920443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608960206 + 1608960207.

It is an arithmetic number, because the mean of its divisors is an integer number (1608960207).

Almost surely, 2^3217920413 is an apocalyptic number.

It is an amenable number.

3217920413 is a deficient number, since it is larger than the sum of its proper divisors (1).

3217920413 is an equidigital number, since it uses as much as digits as its factorization.

3217920413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 3217920413 is about 56726.7169242148. The cubic root of 3217920413 is about 1476.3582873297.

The spelling of 3217920413 in words is "three billion, two hundred seventeen million, nine hundred twenty thousand, four hundred thirteen".