3031812 has 72 divisors (see below), whose sum is σ = 8963136. Its totient is φ = 846144.

The previous prime is 3031807. The next prime is 3031813. The reversal of 3031812 is 2181303.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (3031813) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13243 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (124488).

Almost surely, 2^3031812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3031812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4481568).

3031812 is an abundant number, since it is smaller than the sum of its proper divisors (5931324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3031812 is a wasteful number, since it uses less digits than its factorization.

3031812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3031812 is about 1741.2099241619. The cubic root of 3031812 is about 144.7329527921.

The spelling of 3031812 in words is "three million, thirty-one thousand, eight hundred twelve".