3181687141 has 2 divisors, whose sum is σ = 3181687142. Its totient is φ = 3181687140.

The previous prime is 3181687081. The next prime is 3181687151. The reversal of 3181687141 is 1417861813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3166312900 + 15374241 = 56270^2 + 3921^2 .

It is a cyclic number.

It is not a de Polignac number, because 3181687141 - 2²³ = 3173298533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3181687094 and 3181687103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3181687151) 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 as a sum of consecutive naturals, namely, 1590843570 + 1590843571.

It is an arithmetic number, because the mean of its divisors is an integer number (1590843571).

Almost surely, 2^3181687141 is an apocalyptic number.

It is an amenable number.

3181687141 is a deficient number, since it is larger than the sum of its proper divisors (1).

3181687141 is an equidigital number, since it uses as much as digits as its factorization.

3181687141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 40.

The square root of 3181687141 is about 56406.4459171113. The cubic root of 3181687141 is about 1470.7961721258.

The spelling of 3181687141 in words is "three billion, one hundred eighty-one million, six hundred eighty-seven thousand, one hundred forty-one".