3813338302321 has 4 divisors (see below), whose sum is σ = 3875852045044. Its totient is φ = 3750824559600.

The previous prime is 3813338302313. The next prime is 3813338302327. The reversal of 3813338302321 is 1232038333183.

It is a happy number.

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 705539521296 + 3107798781025 = 839964^2 + 1762895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3813338302321 - 2³ = 3813338302313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3813338302327) 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, 31256871270 + ... + 31256871391.

It is an arithmetic number, because the mean of its divisors is an integer number (968963011261).

Almost surely, 2^{3813338302321} is an apocalyptic number.

It is an amenable number.

3813338302321 is a deficient number, since it is larger than the sum of its proper divisors (62513742723).

3813338302321 is an equidigital number, since it uses as much as digits as its factorization.

3813338302321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62513742722.

The product of its (nonzero) digits is 186624, while the sum is 40.

The spelling of 3813338302321 in words is "three trillion, eight hundred thirteen billion, three hundred thirty-eight million, three hundred two thousand, three hundred twenty-one".