3216755881 has 2 divisors, whose sum is σ = 3216755882. Its totient is φ = 3216755880.

The previous prime is 3216755863. The next prime is 3216755903. The reversal of 3216755881 is 1885576123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2528480656 + 688275225 = 50284^2 + 26235^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216755881 - 2⁹ = 3216755369 is a prime.

It is a super-2 number, since 2×3216755881² = 20695036795896172322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3216755681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608377940 + 1608377941.

It is an arithmetic number, because the mean of its divisors is an integer number (1608377941).

Almost surely, 2^3216755881 is an apocalyptic number.

It is an amenable number.

3216755881 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216755881 is an equidigital number, since it uses as much as digits as its factorization.

3216755881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 403200, while the sum is 46.

The square root of 3216755881 is about 56716.4515903455. The cubic root of 3216755881 is about 1476.1801729281.

The spelling of 3216755881 in words is "three billion, two hundred sixteen million, seven hundred fifty-five thousand, eight hundred eighty-one".