3217650881 has 2 divisors, whose sum is σ = 3217650882. Its totient is φ = 3217650880.

The previous prime is 3217650871. The next prime is 3217650883. The reversal of 3217650881 is 1880567123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3054220225 + 163430656 = 55265^2 + 12784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3217650881 is a prime.

It is a super-2 number, since 2×3217650881² = 20706554384000152322, which contains 22 as substring.

Together with 3217650883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3217650883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608825440 + 1608825441.

It is an arithmetic number, because the mean of its divisors is an integer number (1608825441).

Almost surely, 2^3217650881 is an apocalyptic number.

It is an amenable number.

3217650881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3217650881 is an equidigital number, since it uses as much as digits as its factorization.

3217650881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 3217650881 is about 56724.3411684966. The cubic root of 3217650881 is about 1476.3170664104.

The spelling of 3217650881 in words is "three billion, two hundred seventeen million, six hundred fifty thousand, eight hundred eighty-one".