3145205513 has 4 divisors (see below), whose sum is σ = 3330217620. Its totient is φ = 2960193408.

The previous prime is 3145205509. The next prime is 3145205519. The reversal of 3145205513 is 3155025413.

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 2827367929 + 317837584 = 53173^2 + 17828^2 .

It is not a de Polignac number, because 3145205513 - 2² = 3145205509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3145205519) 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, 92506028 + ... + 92506061.

It is an arithmetic number, because the mean of its divisors is an integer number (832554405).

Almost surely, 2^3145205513 is an apocalyptic number.

It is an amenable number.

3145205513 is a deficient number, since it is larger than the sum of its proper divisors (185012107).

3145205513 is a wasteful number, since it uses less digits than its factorization.

3145205513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185012106.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 3145205513 is about 56082.1318514195. The cubic root of 3145205513 is about 1465.1531037014.

The spelling of 3145205513 in words is "three billion, one hundred forty-five million, two hundred five thousand, five hundred thirteen".