3145505215 has 16 divisors (see below), whose sum is σ = 3881802528. Its totient is φ = 2445828736.

The previous prime is 3145505183. The next prime is 3145505219. The reversal of 3145505215 is 5125055413.

It is not a de Polignac number, because 3145505215 - 2⁵ = 3145505183 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 (3145505219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27112 + ... + 83821.

It is an arithmetic number, because the mean of its divisors is an integer number (242612658).

Almost surely, 2^3145505215 is an apocalyptic number.

3145505215 is a deficient number, since it is larger than the sum of its proper divisors (736297313).

3145505215 is a wasteful number, since it uses less digits than its factorization.

3145505215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111098.

The product of its (nonzero) digits is 15000, while the sum is 31.

The square root of 3145505215 is about 56084.8037796336. The cubic root of 3145505215 is about 1465.1996396502.

The spelling of 3145505215 in words is "three billion, one hundred forty-five million, five hundred five thousand, two hundred fifteen".