3145205 has 16 divisors (see below), whose sum is σ = 4376064. Its totient is φ = 2125440.

The previous prime is 3145201. The next prime is 3145211. The reversal of 3145205 is 5025413.

It is not a de Polignac number, because 3145205 - 2² = 3145201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3145201) 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, 1940 + ... + 3170.

It is an arithmetic number, because the mean of its divisors is an integer number (273504).

Almost surely, 2^3145205 is an apocalyptic number.

3145205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3145205 is a deficient number, since it is larger than the sum of its proper divisors (1230859).

3145205 is a wasteful number, since it uses less digits than its factorization.

3145205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 3145205 is about 1773.4725822521. The cubic root of 3145205 is about 146.5153024043.

The spelling of 3145205 in words is "three million, one hundred forty-five thousand, two hundred five".