3145215 has 16 divisors (see below), whose sum is σ = 5056128. Its totient is φ = 1669536.

The previous prime is 3145211. The next prime is 3145223. The reversal of 3145215 is 5125413.

It is not a de Polignac number, because 3145215 - 2² = 3145211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3145191 and 3145200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145211) 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, 4264 + ... + 4946.

It is an arithmetic number, because the mean of its divisors is an integer number (316008).

Almost surely, 2^3145215 is an apocalyptic number.

3145215 is a deficient number, since it is larger than the sum of its proper divisors (1910913).

3145215 is a wasteful number, since it uses less digits than its factorization.

3145215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998.

The product of its digits is 600, while the sum is 21.

The square root of 3145215 is about 1773.4754015774. The cubic root of 3145215 is about 146.5154576832.

The spelling of 3145215 in words is "three million, one hundred forty-five thousand, two hundred fifteen".