3081812 has 12 divisors (see below), whose sum is σ = 5414976. Its totient is φ = 1534680.

The previous prime is 3081809. The next prime is 3081817. The reversal of 3081812 is 2181803.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 338 + ... + 2505.

It is an arithmetic number, because the mean of its divisors is an integer number (451248).

Almost surely, 2^3081812 is an apocalyptic number.

It is an amenable number.

3081812 is a deficient number, since it is larger than the sum of its proper divisors (2333164).

3081812 is a wasteful number, since it uses less digits than its factorization.

3081812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3118 (or 3116 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 3081812 is about 1755.5090429844. The cubic root of 3081812 is about 145.5242536613.

Subtracting from 3081812 its reverse (2181803), we obtain a palindrome (900009).

It can be divided in two parts, 308 and 1812, that multiplied together give a triangular number (558096 = T₁₀₅₆).

The spelling of 3081812 in words is "three million, eighty-one thousand, eight hundred twelve".