3145305013 has 4 divisors (see below), whose sum is σ = 3153391020. Its totient is φ = 3137219008.

The previous prime is 3145304989. The next prime is 3145305067. The reversal of 3145305013 is 3105035413.

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 1764588049 + 1380716964 = 42007^2 + 37158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3145305013 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 (3145305073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4042420 + ... + 4043197.

It is an arithmetic number, because the mean of its divisors is an integer number (788347755).

Almost surely, 2^3145305013 is an apocalyptic number.

It is an amenable number.

3145305013 is a deficient number, since it is larger than the sum of its proper divisors (8086007).

3145305013 is an equidigital number, since it uses as much as digits as its factorization.

3145305013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8086006.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 3145305013 is about 56083.0189362163. The cubic root of 3145305013 is about 1465.1685537990.

The spelling of 3145305013 in words is "three billion, one hundred forty-five million, three hundred five thousand, thirteen".