3081813 has 16 divisors (see below), whose sum is σ = 4745856. Its totient is φ = 1742400.

The previous prime is 3081809. The next prime is 3081817. The reversal of 3081813 is 3181803.

3081813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3081809) and next prime (3081817).

It is not a de Polignac number, because 3081813 - 2² = 3081809 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3081817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1395 + ... + 2847.

It is an arithmetic number, because the mean of its divisors is an integer number (296616).

Almost surely, 2^3081813 is an apocalyptic number.

It is an amenable number.

3081813 is a deficient number, since it is larger than the sum of its proper divisors (1664043).

3081813 is a wasteful number, since it uses less digits than its factorization.

3081813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1564.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 3081813 is about 1755.5093278020. The cubic root of 3081813 is about 145.5242694014.

The spelling of 3081813 in words is "three million, eighty-one thousand, eight hundred thirteen".