3243731797 has 4 divisors (see below), whose sum is σ = 3249023980. Its totient is φ = 3238439616.

The previous prime is 3243731759. The next prime is 3243731833. The reversal of 3243731797 is 7971373423.

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 347785201 + 2895946596 = 18649^2 + 53814^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3243731797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3243731707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2645172 + ... + 2646397.

It is an arithmetic number, because the mean of its divisors is an integer number (812255995).

Almost surely, 2^3243731797 is an apocalyptic number.

It is an amenable number.

3243731797 is a deficient number, since it is larger than the sum of its proper divisors (5292183).

3243731797 is an equidigital number, since it uses as much as digits as its factorization.

3243731797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5292182.

The product of its digits is 666792, while the sum is 46.

The square root of 3243731797 is about 56953.7689446449. The cubic root of 3243731797 is about 1480.2951379081.

The spelling of 3243731797 in words is "three billion, two hundred forty-three million, seven hundred thirty-one thousand, seven hundred ninety-seven".