3913112321 has 4 divisors (see below), whose sum is σ = 3913312212. Its totient is φ = 3912912432.

The previous prime is 3913112311. The next prime is 3913112327. The reversal of 3913112321 is 1232113193.

3913112321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1617648400 + 2295463921 = 40220^2 + 47911^2 .

It is a cyclic number.

It is not a de Polignac number, because 3913112321 - 2³⁰ = 2839370497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3913112327) 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, 66950 + ... + 110943.

It is an arithmetic number, because the mean of its divisors is an integer number (978328053).

Almost surely, 2^3913112321 is an apocalyptic number.

It is an amenable number.

3913112321 is a deficient number, since it is larger than the sum of its proper divisors (199891).

3913112321 is a wasteful number, since it uses less digits than its factorization.

3913112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199890.

The product of its digits is 972, while the sum is 26.

The square root of 3913112321 is about 62554.8744783330. The cubic root of 3913112321 is about 1575.8230109989.

The spelling of 3913112321 in words is "three billion, nine hundred thirteen million, one hundred twelve thousand, three hundred twenty-one".