3201681913 has 4 divisors (see below), whose sum is σ = 3202501968. Its totient is φ = 3200861860.

The previous prime is 3201681911. The next prime is 3201681919. The reversal of 3201681913 is 3191861023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3201681913 - 2¹ = 3201681911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201681911) 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, 404143 + ... + 411988.

It is an arithmetic number, because the mean of its divisors is an integer number (800625492).

Almost surely, 2^3201681913 is an apocalyptic number.

It is an amenable number.

3201681913 is a deficient number, since it is larger than the sum of its proper divisors (820055).

3201681913 is an equidigital number, since it uses as much as digits as its factorization.

3201681913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820054.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 3201681913 is about 56583.4066931287. The cubic root of 3201681913 is about 1473.8707300901.

The spelling of 3201681913 in words is "three billion, two hundred one million, six hundred eighty-one thousand, nine hundred thirteen".