3234181681 has 4 divisors (see below), whose sum is σ = 3247601764. Its totient is φ = 3220761600.

The previous prime is 3234181649. The next prime is 3234181693. The reversal of 3234181681 is 1861814323.

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 1782190656 + 1451991025 = 42216^2 + 38105^2 .

It is a cyclic number.

It is not a de Polignac number, because 3234181681 - 2⁵ = 3234181649 is a prime.

It is a super-2 number, since 2×3234181681² = 20919862291431971522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3234181681.

It is not an unprimeable number, because it can be changed into a prime (3234181381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6709680 + ... + 6710161.

It is an arithmetic number, because the mean of its divisors is an integer number (811900441).

Almost surely, 2^3234181681 is an apocalyptic number.

It is an amenable number.

3234181681 is a deficient number, since it is larger than the sum of its proper divisors (13420083).

3234181681 is a wasteful number, since it uses less digits than its factorization.

3234181681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13420082.

The product of its digits is 27648, while the sum is 37.

The square root of 3234181681 is about 56869.8661946729. The cubic root of 3234181681 is about 1478.8409602478.

The spelling of 3234181681 in words is "three billion, two hundred thirty-four million, one hundred eighty-one thousand, six hundred eighty-one".