3181332673 has 4 divisors (see below), whose sum is σ = 3182671188. Its totient is φ = 3179994160.

The previous prime is 3181332617. The next prime is 3181332701. The reversal of 3181332673 is 3762331813.

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 1411279489 + 1770053184 = 37567^2 + 42072^2 .

It is a cyclic number.

It is not a de Polignac number, because 3181332673 - 2¹³ = 3181324481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3181332613) 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, 665686 + ... + 670447.

It is an arithmetic number, because the mean of its divisors is an integer number (795667797).

Almost surely, 2^3181332673 is an apocalyptic number.

It is an amenable number.

3181332673 is a deficient number, since it is larger than the sum of its proper divisors (1338515).

3181332673 is a wasteful number, since it uses less digits than its factorization.

3181332673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338514.

The product of its digits is 54432, while the sum is 37.

The square root of 3181332673 is about 56403.3037418909. The cubic root of 3181332673 is about 1470.7415502102.

The spelling of 3181332673 in words is "three billion, one hundred eighty-one million, three hundred thirty-two thousand, six hundred seventy-three".