3140905 has 8 divisors (see below), whose sum is σ = 3778632. Its totient is φ = 2506368.

The previous prime is 3140881. The next prime is 3140911. The reversal of 3140905 is 5090413.

It can be written as a sum of positive squares in 4 ways, for example, as 1915456 + 1225449 = 1384^2 + 1107^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3140905 - 2⁵ = 3140873 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3237 + ... + 4093.

It is an arithmetic number, because the mean of its divisors is an integer number (472329).

Almost surely, 2^3140905 is an apocalyptic number.

It is an amenable number.

3140905 is a deficient number, since it is larger than the sum of its proper divisors (637727).

3140905 is an equidigital number, since it uses as much as digits as its factorization.

3140905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595.

The product of its (nonzero) digits is 540, while the sum is 22.

The square root of 3140905 is about 1772.2598567930. The cubic root of 3140905 is about 146.4485019754.

The spelling of 3140905 in words is "three million, one hundred forty thousand, nine hundred five".