3140305 has 32 divisors (see below), whose sum is σ = 4644864. Its totient is φ = 1991616.

The previous prime is 3140299. The next prime is 3140309. The reversal of 3140305 is 5030413.

It is not a de Polignac number, because 3140305 - 2³ = 3140297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3140309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37794 + ... + 37876.

It is an arithmetic number, because the mean of its divisors is an integer number (145152).

Almost surely, 2^3140305 is an apocalyptic number.

3140305 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3140305 is a deficient number, since it is larger than the sum of its proper divisors (1504559).

3140305 is a wasteful number, since it uses less digits than its factorization.

3140305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 3140305 is about 1772.0905733060. The cubic root of 3140305 is about 146.4391761391.

Adding to 3140305 its reverse (5030413), we get a palindrome (8170718).

The spelling of 3140305 in words is "three million, one hundred forty thousand, three hundred five".