3243812081 has 4 divisors (see below), whose sum is σ = 3355667700. Its totient is φ = 3131956464.

The previous prime is 3243812057. The next prime is 3243812111. The reversal of 3243812081 is 1802183423.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2762448481 + 481363600 = 52559^2 + 21940^2 .

It is a cyclic number.

It is not a de Polignac number, because 3243812081 - 2¹⁰ = 3243811057 is a prime.

It is a super-2 number, since 2×3243812081² = 21044633633683101122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3243812581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55927766 + ... + 55927823.

It is an arithmetic number, because the mean of its divisors is an integer number (838916925).

Almost surely, 2^3243812081 is an apocalyptic number.

It is an amenable number.

3243812081 is a deficient number, since it is larger than the sum of its proper divisors (111855619).

3243812081 is a wasteful number, since it uses less digits than its factorization.

3243812081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111855618.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 3243812081 is about 56954.4737575548. The cubic root of 3243812081 is about 1480.3073504914.

The spelling of 3243812081 in words is "three billion, two hundred forty-three million, eight hundred twelve thousand, eighty-one".