3145113581 has 2 divisors, whose sum is σ = 3145113582. Its totient is φ = 3145113580.

The previous prime is 3145113571. The next prime is 3145113607. The reversal of 3145113581 is 1853115413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2991105481 + 154008100 = 54691^2 + 12410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3145113581 is a prime.

It is a super-3 number, since 3×3145113581³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3145113571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1572556790 + 1572556791.

It is an arithmetic number, because the mean of its divisors is an integer number (1572556791).

Almost surely, 2^3145113581 is an apocalyptic number.

It is an amenable number.

3145113581 is a deficient number, since it is larger than the sum of its proper divisors (1).

3145113581 is an equidigital number, since it uses as much as digits as its factorization.

3145113581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7200, while the sum is 32.

The square root of 3145113581 is about 56081.3122260883. The cubic root of 3145113581 is about 1465.1388284532.

Adding to 3145113581 its reverse (1853115413), we get a palindrome (4998228994).

The spelling of 3145113581 in words is "three billion, one hundred forty-five million, one hundred thirteen thousand, five hundred eighty-one".