3116405 has 4 divisors (see below), whose sum is σ = 3739692. Its totient is φ = 2493120.

The previous prime is 3116381. The next prime is 3116417. The reversal of 3116405 is 5046113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2208196 + 908209 = 1486^2 + 953^2 .

It is not a de Polignac number, because 3116405 - 2⁶ = 3116341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311636 + ... + 311645.

It is an arithmetic number, because the mean of its divisors is an integer number (934923).

Almost surely, 2^3116405 is an apocalyptic number.

It is an amenable number.

3116405 is a deficient number, since it is larger than the sum of its proper divisors (623287).

3116405 is an equidigital number, since it uses as much as digits as its factorization.

3116405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623286.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 3116405 is about 1765.3342459716. The cubic root of 3116405 is about 146.0667268643.

The spelling of 3116405 in words is "three million, one hundred sixteen thousand, four hundred five".