3145143305 has 4 divisors (see below), whose sum is σ = 3774171972. Its totient is φ = 2516114640.

The previous prime is 3145143271. The next prime is 3145143343. The reversal of 3145143305 is 5033415413.

3145143305 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, and also an emirpimes, since its reverse is a distinct semiprime: 5033415413 = 13 ⋅387185801.

It can be written as a sum of positive squares in 2 ways, for example, as 2199703801 + 945439504 = 46901^2 + 30748^2 .

It is not a de Polignac number, because 3145143305 - 2⁸ = 3145143049 is a prime.

It is a super-3 number, since 3×3145143305³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314514326 + ... + 314514335.

It is an arithmetic number, because the mean of its divisors is an integer number (943542993).

Almost surely, 2^3145143305 is an apocalyptic number.

It is an amenable number.

3145143305 is a deficient number, since it is larger than the sum of its proper divisors (629028667).

3145143305 is an equidigital number, since it uses as much as digits as its factorization.

3145143305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629028666.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 3145143305 is about 56081.5772335265. The cubic root of 3145143305 is about 1465.1434440416.

Adding to 3145143305 its reverse (5033415413), we get a palindrome (8178558718).

The spelling of 3145143305 in words is "three billion, one hundred forty-five million, one hundred forty-three thousand, three hundred five".