3145505216 has 84 divisors (see below), whose sum is σ = 7333570296. Its totient is φ = 1334592000.

The previous prime is 3145505183. The next prime is 3145505219. The reversal of 3145505216 is 6125055413.

It is a Harshad number since it is a multiple of its sum of digits (32).

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311771 + ... + 321701.

Almost surely, 2^3145505216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3145505216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3666785148).

3145505216 is an abundant number, since it is smaller than the sum of its proper divisors (4188065080).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3145505216 is a wasteful number, since it uses less digits than its factorization.

3145505216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10058 (or 10041 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The square root of 3145505216 is about 56084.8037885486. The cubic root of 3145505216 is about 1465.1996398055.

The spelling of 3145505216 in words is "three billion, one hundred forty-five million, five hundred five thousand, two hundred sixteen".