3112328621 has 4 divisors (see below), whose sum is σ = 3113631612. Its totient is φ = 3111025632.

The previous prime is 3112328617. The next prime is 3112328627. The reversal of 3112328621 is 1268232113.

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 1450543396 + 1661785225 = 38086^2 + 40765^2 .

It is a cyclic number.

It is not a de Polignac number, because 3112328621 - 2² = 3112328617 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 (3112328627) 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, 647906 + ... + 652691.

It is an arithmetic number, because the mean of its divisors is an integer number (778407903).

Almost surely, 2^3112328621 is an apocalyptic number.

It is an amenable number.

3112328621 is a deficient number, since it is larger than the sum of its proper divisors (1302991).

3112328621 is a wasteful number, since it uses less digits than its factorization.

3112328621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1302990.

The product of its digits is 3456, while the sum is 29.

The square root of 3112328621 is about 55788.2480545858. The cubic root of 3112328621 is about 1460.0301208836.

The spelling of 3112328621 in words is "three billion, one hundred twelve million, three hundred twenty-eight thousand, six hundred twenty-one".